HTML事件属性有哪些？onclick怎么用

常见的html事件属性包括：1. 鼠标事件如onclick、ondblclick、onmouseover等；2. 键盘事件如onkeydown、onkeyup；3. 表单事件如onchange、onsubmit、onfocus；4. 窗口/文档事件如onload、onresize；5. 触摸事件如ontouchstart、ontouchend；6. 拖放事件如ondrag、ondrop；7. 媒体事件如onplay、onpause；8. 剪贴板事件如oncopy、onpaste；9. 打印事件如onbeforeprint、onafterprint；onclick通过在html标签中添加属性并执行javascript代码来响应点击操作，推荐使用addeventlistener方法替代onclick以实现更灵活的事件管理，该方法可通过event.stoppropagation()控制事件流、支持多个监听器并可动态移除，移除时需调用removeeventlistener并传入相同事件类型和函数引用，确保事件处理逻辑可维护且高效。

HTML事件属性，简单来说，就是让你的网页能“听懂”用户的操作。比如点击按钮，鼠标移动，甚至页面加载完成，都可以触发不同的事件，然后执行你预先设定的代码。onclick 只是众多事件属性中的一个，专门负责监听鼠标点击事件。

解决方案

HTML事件属性本质上是赋予HTML元素响应用户交互的能力。它们允许你在特定事件发生时执行JavaScript代码。onclick 只是冰山一角，还有很多其他事件属性等着你去探索。

常见的HTML事件属性有哪些？

HTML事件属性种类繁多，可以根据事件类型进行大致分类：

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鼠标事件：

onclick

(点击),

oncontextmenu

(右键菜单),

ondblclick

(双击),

onmousedown

(鼠标按下),

onmouseup

(鼠标抬起),

onmousemove

(鼠标移动),

onmouseover

(鼠标悬停),

onmouseout

(鼠标移开)键盘事件：

onkeydown

(键盘按下),

onkeypress

(键盘按压),

onkeyup

(键盘抬起)表单事件：

onblur

(失去焦点),

onchange

(值改变),

onfocus

(获得焦点),

onreset

(重置表单),

onselect

(文本选中),

onsubmit

(提交表单)窗口/文档事件：

onload

(页面加载完成),

onresize

(窗口大小改变),

onscroll

(滚动条滚动),

onunload

(页面卸载)触摸事件 (移动端)：

ontouchstart

(触摸开始),

ontouchmove

(触摸移动),

ontouchend

(触摸结束),

ontouchcancel

(触摸取消)拖放事件：

ondrag

ondragend

ondragenter

ondragleave

ondragover

ondragstart

ondrop

媒体事件：

onabort

oncanplay

oncanplaythrough

ondurationchange

onemptied

onended

onerror

onloadeddata

onloadedmetadata

onloadstart

onpause

onplay

onplaying

onprogress

onratechange

onseeked

onseeking

onstalled

onsuspend

ontimeupdate

onvolumechange

onwaiting

剪贴板事件：

oncopy

oncut

onpaste

打印事件：

onafterprint

onbeforeprint

这只是一个大致的列表，实际上还有一些更细分的事件属性。记住，并非所有事件属性都适用于所有HTML元素。例如，

onchange

通常用于

, 和

</pre>
<div class="contentsignin"></div>
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<p> 元素，而 </p>
<div class="code" style="position:relative;padding:0px;margin:0px">
<pre class="brush:php;toolbar:false;">onload</pre>
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<p> 主要用于 </p>
<div class="code" style="position:relative;padding:0px;margin:0px">
<pre class="brush:php;toolbar:false;"></pre>
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<p> 或 </p>
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<pre class="brush:php;toolbar:false;">@@##@@</pre>
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<p> 元素。</p>
<h3>onclick 事件属性怎么用？</h3>
<div class="code" style="position:relative;padding:0px;margin:0px">
<pre class="brush:php;toolbar:false;">onclick</pre>
<div class="contentsignin"></div>
</div>
<p> 事件属性用于在用户点击HTML元素时执行JavaScript代码。用法非常简单，直接在HTML标签中添加 </p>
<div class="code" style="position:relative;padding:0px;margin:0px">
<pre class="brush:php;toolbar:false;">onclick</pre>
<div class="contentsignin"></div>
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<p> 属性，并赋予它一个JavaScript代码片段或函数调用。</p>
<p><strong>示例 1：直接在onclick中编写JavaScript代码</strong></p>
<div class="code" style="position:relative;padding:0px;margin:0px">
<pre class='brush:html;toolbar:false;'><button>点击我</button></pre>
<div class="contentsignin"></div>
</div>
<p>当用户点击这个按钮时，会弹出一个包含 “你点击了我！” 的警告框。</p>
<p><strong>示例 2：调用JavaScript函数</strong></p>
<div class="code" style="position:relative;padding:0px;margin:0px">
<pre class='brush:html;toolbar:false;'>  function handleClick() {    console.log("按钮被点击了！");    // 可以执行更复杂的操作，例如修改页面内容，发送网络请求等  }<button>点击我</button></pre>
<div class="contentsignin"></div>
</div>
<p>在这个例子中，点击按钮会调用名为 </p>
<div class="code" style="position:relative;padding:0px;margin:0px">
<pre class="brush:php;toolbar:false;">handleClick</pre>
<div class="contentsignin"></div>
</div>
<p> 的JavaScript函数。这个函数可以在控制台中输出 “按钮被点击了！”，或者执行其他你需要的操作。</p>
<p><strong>示例 3：传递参数给函数</strong></p>
<div class="code" style="position:relative;padding:0px;margin:0px">
<pre class='brush:html;toolbar:false;'>  function showMessage(message) {    alert(message);  }<button>点击我</button></pre>
<div class="contentsignin"></div>
</div>
<p>这里，我们通过 </p>
<div class="code" style="position:relative;padding:0px;margin:0px">
<pre class="brush:php;toolbar:false;">onclick</pre>
<div class="contentsignin"></div>
</div>
<p> 将字符串 “Hello, world!” 作为参数传递给 </p>
<div class="code" style="position:relative;padding:0px;margin:0px">
<pre class="brush:php;toolbar:false;">showMessage</pre>
<div class="contentsignin"></div>
</div>
<p> 函数。点击按钮会弹出一个显示 “Hello, world!” 的警告框。</p>
<p><strong>一些使用 </p>
<div class="code" style="position:relative;padding:0px;margin:0px">
<pre class="brush:php;toolbar:false;">onclick</pre>
<div class="contentsignin"></div>
</div>
<p> 的注意事项：</strong></p>
<p>                                    <strong>避免在 </p>
<div class="code" style="position:relative;padding:0px;margin:0px">
<pre class="brush:php;toolbar:false;">onclick</pre>
<div class="contentsignin"></div>
</div>
<p> 中编写过多的代码。</strong> 复杂的逻辑应该放在单独的JavaScript函数中，然后在 </p>
<div class="code" style="position:relative;padding:0px;margin:0px">
<pre class="brush:php;toolbar:false;">onclick</pre>
<div class="contentsignin"></div>
</div>
<p> 中调用该函数。<strong></p>
<div class="code" style="position:relative;padding:0px;margin:0px">
<pre class="brush:php;toolbar:false;">this</pre>
<div class="contentsignin"></div>
</div>
<p> 关键字。</strong> 在 </p>
<div class="code" style="position:relative;padding:0px;margin:0px">
<pre class="brush:php;toolbar:false;">onclick</pre>
<div class="contentsignin"></div>
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<p> 中，</p>
<div class="code" style="position:relative;padding:0px;margin:0px">
<pre class="brush:php;toolbar:false;">this</pre>
<div class="contentsignin"></div>
</div>
<p> 关键字指向触发事件的HTML元素。你可以使用 </p>
<div class="code" style="position:relative;padding:0px;margin:0px">
<pre class="brush:php;toolbar:false;">this</pre>
<div class="contentsignin"></div>
</div>
<p> 来访问元素的属性或调用其方法。<strong><span class="wpcom_tag_link"><a href="https://www.chuangxiangniao.com/p/tag/shijianmaopao" title="事件冒泡" target="_blank">事件冒泡</a></span>。</strong> 点击一个元素可能会触发其父元素的 </p>
<div class="code" style="position:relative;padding:0px;margin:0px">
<pre class="brush:php;toolbar:false;">onclick</pre>
<div class="contentsignin"></div>
</div>
<p> 事件。可以使用 </p>
<div class="code" style="position:relative;padding:0px;margin:0px">
<pre class="brush:php;toolbar:false;">event.stopPropagation()</pre>
<div class="contentsignin"></div>
</div>
<p> 来阻止事件冒泡。<strong>addEventListener。</strong>  除了直接在HTML中使用 </p>
<div class="code" style="position:relative;padding:0px;margin:0px">
<pre class="brush:php;toolbar:false;">onclick</pre>
<div class="contentsignin"></div>
</div>
<p> 属性外，还可以使用JavaScript的 </p>
<div class="code" style="position:relative;padding:0px;margin:0px">
<pre class="brush:php;toolbar:false;">addEventListener</pre>
<div class="contentsignin"></div>
</div>
<p> 方法来绑定事件。这是一种更灵活和推荐的方式，因为它允许你为一个元素绑定多个事件处理程序，并且可以更好地控制事件的传播。</p>
<h3>如何使用 addEventListener 替代 onclick？</h3>
<div class="code" style="position:relative;padding:0px;margin:0px">
<pre class="brush:php;toolbar:false;">addEventListener</pre>
<div class="contentsignin"></div>
</div>
<p> 提供了更灵活的事件处理机制，特别是在大型项目中。它允许你为一个元素绑定多个事件监听器，而不会像 </p>
<div class="code" style="position:relative;padding:0px;margin:0px">
<pre class="brush:php;toolbar:false;">onclick</pre>
<div class="contentsignin"></div>
</div>
<p> 那样互相覆盖。</p>
<p><strong>示例：使用 addEventListener 绑定点击事件</strong></p>
<div class="code" style="position:relative;padding:0px;margin:0px">
<pre class='brush:html;toolbar:false;'><button id="myButton">点击我</button>  const button = document.getElementById('myButton');  button.addEventListener('click', function() {    console.log('按钮被点击了 (addEventListener)!');  });  button.addEventListener('click', function() {    alert('另一个点击事件处理程序!');  });</pre>
<div class="contentsignin"></div>
</div>
<p>在这个例子中，我们首先通过 </p>
<div class="code" style="position:relative;padding:0px;margin:0px">
<pre class="brush:php;toolbar:false;">document.getElementById</pre>
<div class="contentsignin"></div>
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<p> 获取按钮元素。然后，使用 </p>
<div class="code" style="position:relative;padding:0px;margin:0px">
<pre class="brush:php;toolbar:false;">addEventListener</pre>
<div class="contentsignin"></div>
</div>
<p> 方法为按钮绑定了两个点击事件处理程序。当按钮被点击时，这两个处理程序都会被执行。</p>
<div class="code" style="position:relative;padding:0px;margin:0px">
<pre class="brush:php;toolbar:false;">addEventListener</pre>
<div class="contentsignin"></div>
</div>
<p> 的语法如下：</p>
<div class="code" style="position:relative;padding:0px;margin:0px">
<pre class='brush:javascript;toolbar:false;'>element.addEventListener(event, function, useCapture);</pre>
<div class="contentsignin"></div>
</div>
<div class="code" style="position:relative;padding:0px;margin:0px">
<pre class="brush:php;toolbar:false;">event</pre>
<div class="contentsignin"></div>
</div>
<p>:  要监听的事件类型，例如 </p>
<div class="code" style="position:relative;padding:0px;margin:0px">
<pre class="brush:php;toolbar:false;">'click'</pre>
<div class="contentsignin"></div>
</div>
<p>, </p>
<div class="code" style="position:relative;padding:0px;margin:0px">
<pre class="brush:php;toolbar:false;">'mouseover'</pre>
<div class="contentsignin"></div>
</div>
<p>, </p>
<div class="code" style="position:relative;padding:0px;margin:0px">
<pre class="brush:php;toolbar:false;">'keydown'</pre>
<div class="contentsignin"></div>
</div>
<p> 等。注意，这里不需要加 </p>
<div class="code" style="position:relative;padding:0px;margin:0px">
<pre class="brush:php;toolbar:false;">on</pre>
<div class="contentsignin"></div>
</div>
<p> 前缀。</p>
<div class="code" style="position:relative;padding:0px;margin:0px">
<pre class="brush:php;toolbar:false;">function</pre>
<div class="contentsignin"></div>
</div>
<p>: 事件处理程序，即当事件发生时要执行的函数。</p>
<div class="code" style="position:relative;padding:0px;margin:0px">
<pre class="brush:php;toolbar:false;">useCapture</pre>
<div class="contentsignin"></div>
</div>
<p>: 可选参数，指定事件是在捕获阶段还是冒泡阶段处理。默认为 </p>
<div class="code" style="position:relative;padding:0px;margin:0px">
<pre class="brush:php;toolbar:false;">false</pre>
<div class="contentsignin"></div>
</div>
<p> (冒泡阶段)。</p>
<p><strong>addEventListener 的优点：</strong></p>
<p><strong>可以为一个元素绑定多个事件处理程序。</strong><strong>可以控制事件的传播 (捕获或冒泡)。</strong><strong>更易于管理和维护事件处理代码。</strong><strong>可以动态地添加和移除事件监听器。</strong></p>
<p>总而言之，虽然 </p>
<div class="code" style="position:relative;padding:0px;margin:0px">
<pre class="brush:php;toolbar:false;">onclick</pre>
<div class="contentsignin"></div>
</div>
<p> 属性在简单场景下很方便，但 </p>
<div class="code" style="position:relative;padding:0px;margin:0px">
<pre class="brush:php;toolbar:false;">addEventListener</pre>
<div class="contentsignin"></div>
</div>
<p> 在更复杂的应用中提供了更强大的功能和更好的代码组织方式。</p>
<h3>如何移除通过 addEventListener 添加的事件监听器？</h3>
<p>有时候，你可能需要在特定情况下移除之前通过 </p>
<div class="code" style="position:relative;padding:0px;margin:0px">
<pre class="brush:php;toolbar:false;">addEventListener</pre>
<div class="contentsignin"></div>
</div>
<p> 添加的事件监听器。 这可以通过 </p>
<div class="code" style="position:relative;padding:0px;margin:0px">
<pre class="brush:php;toolbar:false;">removeEventListener</pre>
<div class="contentsignin"></div>
</div>
<p> 方法来实现。</p>
<p><strong>示例：移除事件监听器</strong></p>
<div class="code" style="position:relative;padding:0px;margin:0px">
<pre class='brush:html;toolbar:false;'><button id="myButton">点击我</button>  const button = document.getElementById('myButton');  function handleClick() {    console.log('按钮被点击了!');    // 移除事件监听器    button.removeEventListener('click', handleClick);    console.log('事件监听器已移除');  }  button.addEventListener('click', handleClick);</pre>
<div class="contentsignin"></div>
</div>
<p>在这个例子中，我们定义了一个名为 </p>
<div class="code" style="position:relative;padding:0px;margin:0px">
<pre class="brush:php;toolbar:false;">handleClick</pre>
<div class="contentsignin"></div>
</div>
<p> 的函数，并将其作为点击事件的监听器添加到按钮上。 当按钮被点击时，</p>
<div class="code" style="position:relative;padding:0px;margin:0px">
<pre class="brush:php;toolbar:false;">handleClick</pre>
<div class="contentsignin"></div>
</div>
<p> 函数会被执行，它首先会在控制台中输出 “按钮被点击了!”，然后使用 </p>
<div class="code" style="position:relative;padding:0px;margin:0px">
<pre class="brush:php;toolbar:false;">removeEventListener</pre>
<div class="contentsignin"></div>
</div>
<p> 方法将自身从按钮的点击事件监听器列表中移除。 之后，再次点击按钮将不会再触发任何事件。</p>
<p><strong>removeEventListener 的语法：</strong></p>
<div class="code" style="position:relative;padding:0px;margin:0px">
<pre class='brush:javascript;toolbar:false;'>element.removeEventListener(event, function, useCapture);</pre>
<div class="contentsignin"></div>
</div>
<div class="code" style="position:relative;padding:0px;margin:0px">
<pre class="brush:php;toolbar:false;">event</pre>
<div class="contentsignin"></div>
</div>
<p>:  要移除的事件类型，必须与添加监听器时使用的事件类型完全一致。</p>
<div class="code" style="position:relative;padding:0px;margin:0px">
<pre class="brush:php;toolbar:false;">function</pre>
<div class="contentsignin"></div>
</div>
<p>:  要移除的事件处理程序，必须与添加监听器时使用的函数完全一致 (即同一个函数对象)。</p>
<div class="code" style="position:relative;padding:0px;margin:0px">
<pre class="brush:php;toolbar:false;">useCapture</pre>
<div class="contentsignin"></div>
</div>
<p>:  可选参数，必须与添加监听器时使用的 </p>
<div class="code" style="position:relative;padding:0px;margin:0px">
<pre class="brush:php;toolbar:false;">useCapture</pre>
<div class="contentsignin"></div>
</div>
<p> 值完全一致。</p>
<p><strong>注意事项：</strong></p>
<p>要成功移除事件监听器，传递给 </p>
<div class="code" style="position:relative;padding:0px;margin:0px">
<pre class="brush:php;toolbar:false;">removeEventListener</pre>
<div class="contentsignin"></div>
</div>
<p> 的参数必须与添加监听器时使用的参数完全相同。 这意味着你需要保存对事件处理函数的引用，以便稍后可以将其传递给 </p>
<div class="code" style="position:relative;padding:0px;margin:0px">
<pre class="brush:php;toolbar:false;">removeEventListener</pre>
<div class="contentsignin"></div>
</div>
<p>。如果使用匿名函数作为事件处理程序，则无法通过 </p>
<div class="code" style="position:relative;padding:0px;margin:0px">
<pre class="brush:php;toolbar:false;">removeEventListener</pre>
<div class="contentsignin"></div>
</div>
<p> 移除它，因为你无法获得对该匿名函数的引用。</p>
<p>因此，为了能够移除事件监听器，建议将事件处理函数定义为具名函数，并保存对该函数的引用。</p>
<div class="code" style="position:relative;padding:0px;margin:0px">
<pre class="brush:php;toolbar:false;">addEventListener</pre>
<div class="contentsignin"></div>
</div>
<p> 和 </p>
<div class="code" style="position:relative;padding:0px;margin:0px">
<pre class="brush:php;toolbar:false;">removeEventListener</pre>
<div class="contentsignin"></div>
</div>
<p> 提供了强大的事件管理能力，允许你动态地添加和移除事件监听器，从而构建更灵活和响应式的Web应用程序。</p>
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            <span><i class="item-images-el j-lazy" style="background-image: url('https://www.chuangxiangniao.com/wp-content/themes/justnews/themer/assets/images/lazy.png');" data-original="https://cdn.chuangxiangniao.com/www/2025/12/175412599599872.png"></i></span><span><i class="item-images-el j-lazy" style="background-image: url('https://www.chuangxiangniao.com/wp-content/themes/justnews/themer/assets/images/lazy.png');" data-original="https://cdn.chuangxiangniao.com/www/2025/12/175412599593826.png"></i></span><span><i class="item-images-el j-lazy" style="background-image: url('https://www.chuangxiangniao.com/wp-content/themes/justnews/themer/assets/images/lazy.png');" data-original="http://images/pic.jpg"></i></span><span><i class="item-images-el j-lazy" style="background-image: url('https://www.chuangxiangniao.com/wp-content/themes/justnews/themer/assets/images/lazy.png');" data-original="http://assets/image.png"></i></span>        </a>
        <div class="item-excerpt">
            <p>base 标签的作用是为页面所有相对 url 设定统一的基准起点，并可设置默认链接打开方式。1. 它通过 href 属性定义基准 url，使所有相对路径资源（如图片、css、js、链接）以此为基础解析为绝对路径，便于网站迁移和多环境部署；2. 通过 target 属性为未指定目标的链接设置默认打开方…</p>
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                        <img alt='程序猿的头像' src='//cdn.chuangxiangniao.com/www/2025/10/2025102208472691.jpg' class='avatar avatar-60 photo' height='60' width='60' />                        <span>程序猿</span>
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                </div>
                        <span class="item-meta-li date">2025年12月22日</span>
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                <a class="item-meta-li" href="https://www.chuangxiangniao.com/news-2" target="_blank">好文分享</a>
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                <span class="item-meta-li views" title="阅读数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-eye"></use></svg></i>0</span><a class="item-meta-li comments" href="https://www.chuangxiangniao.com/p/1570117.html#comments" target="_blank" title="评论数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-comment"></use></svg></i>0</a><span class="item-meta-li stars" title="收藏数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-star"></use></svg></i>0</span><span class="item-meta-li likes" title="点赞数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-thumb-up"></use></svg></i>0</span>            </div>
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                <h3 class="item-title">
            <a href="https://www.chuangxiangniao.com/p/1570115.html" target="_blank" rel="bookmark">
                                 HTML图片如何设置大小？width和height怎么用？            </a>
        </h3>
        <a class="item-images" href="https://www.chuangxiangniao.com/p/1570115.html" title="HTML图片如何设置大小？width和height怎么用？" target="_blank">
            <span><i class="item-images-el j-lazy" style="background-image: url('https://www.chuangxiangniao.com/wp-content/themes/justnews/themer/assets/images/lazy.png');" data-original="https://cdn.chuangxiangniao.com/www/2025/12/175412604222178.jpg"></i></span><span><i class="item-images-el j-lazy" style="background-image: url('https://www.chuangxiangniao.com/wp-content/themes/justnews/themer/assets/images/lazy.png');" data-original="http://your-image.jpg"></i></span><span><i class="item-images-el j-lazy" style="background-image: url('https://www.chuangxiangniao.com/wp-content/themes/justnews/themer/assets/images/lazy.png');" data-original="http://your-image.jpg"></i></span><span><i class="item-images-el j-lazy" style="background-image: url('https://www.chuangxiangniao.com/wp-content/themes/justnews/themer/assets/images/lazy.png');" data-original="http://your-image.jpg"></i></span>        </a>
        <div class="item-excerpt">
            <p>直接设置图片大小最简单的方法是使用标签的width和height属性，数值可为像素或百分比；2. 不建议直接在html中设置尺寸，因违反关注点分离原则，影响响应式设计和维护性；3. 推荐使用css控制图片大小，如width: 100%; height: auto;或max-width: 100%; …</p>
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                                        <a data-user="3" target="_blank" href="https://www.chuangxiangniao.com/user/3" class="avatar j-user-card">
                        <img alt='程序猿的头像' src='//cdn.chuangxiangniao.com/www/2025/10/2025102208472691.jpg' class='avatar avatar-60 photo' height='60' width='60' />                        <span>程序猿</span>
                    </a>
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                        <span class="item-meta-li date">2025年12月22日</span>
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                <a class="item-meta-li" href="https://www.chuangxiangniao.com/news-2" target="_blank">好文分享</a>
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                <span class="item-meta-li views" title="阅读数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-eye"></use></svg></i>0</span><a class="item-meta-li comments" href="https://www.chuangxiangniao.com/p/1570115.html#comments" target="_blank" title="评论数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-comment"></use></svg></i>0</a><span class="item-meta-li stars" title="收藏数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-star"></use></svg></i>0</span><span class="item-meta-li likes" title="点赞数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-thumb-up"></use></svg></i>0</span>            </div>
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                <h3 class="item-title">
            <a href="https://www.chuangxiangniao.com/p/1570108.html" target="_blank" rel="bookmark">
                                 HTML中的行内元素和块级元素有什么区别？ 元素类型解析            </a>
        </h3>
        <a class="item-images" href="https://www.chuangxiangniao.com/p/1570108.html" title="HTML中的行内元素和块级元素有什么区别？ 元素类型解析" target="_blank">
            <span><i class="item-images-el j-lazy" style="background-image: url('https://www.chuangxiangniao.com/wp-content/themes/justnews/themer/assets/images/lazy.png');" data-original="https://cdn.chuangxiangniao.com/www/2025/12/175412635153616.png"></i></span><span><i class="item-images-el j-lazy" style="background-image: url('https://www.chuangxiangniao.com/wp-content/themes/justnews/themer/assets/images/lazy.png');" data-original="https://cdn.chuangxiangniao.com/www/2025/12/175412635121094.png"></i></span><span><i class="item-images-el j-lazy" style="background-image: url('https://www.chuangxiangniao.com/wp-content/themes/justnews/themer/assets/images/lazy.png');" data-original="https://cdn.chuangxiangniao.com/www/2025/12/175412635257681.png"></i></span><span><i class="item-images-el j-lazy" style="background-image: url('https://www.chuangxiangniao.com/wp-content/themes/justnews/themer/assets/images/lazy.png');" data-original="https://cdn.chuangxiangniao.com/www/2025/12/175412635232884.png"></i></span>        </a>
        <div class="item-excerpt">
            <p>理解html元素类型至关重要，因为它是构建网页布局和实现响应式设计的基础。1. 块级元素如 、 、 等默认独占一行，可设置宽高和内外边距，用于构建页面主要结构；2. 行内元素如、、等不独占一行，宽高由内容决定，适合在文本中嵌入内容；3. 可通过css的display属性自由转换元素类型，displa…</p>
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                                        <a data-user="3" target="_blank" href="https://www.chuangxiangniao.com/user/3" class="avatar j-user-card">
                        <img alt='程序猿的头像' src='//cdn.chuangxiangniao.com/www/2025/10/2025102208472691.jpg' class='avatar avatar-60 photo' height='60' width='60' />                        <span>程序猿</span>
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                        <span class="item-meta-li date">2025年12月22日</span>
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                <a class="item-meta-li" href="https://www.chuangxiangniao.com/news-2" target="_blank">好文分享</a>
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                <span class="item-meta-li views" title="阅读数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-eye"></use></svg></i>0</span><a class="item-meta-li comments" href="https://www.chuangxiangniao.com/p/1570108.html#comments" target="_blank" title="评论数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-comment"></use></svg></i>0</a><span class="item-meta-li stars" title="收藏数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-star"></use></svg></i>0</span><span class="item-meta-li likes" title="点赞数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-thumb-up"></use></svg></i>0</span>            </div>
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                <h3 class="item-title">
            <a href="https://www.chuangxiangniao.com/p/1570096.html" target="_blank" rel="bookmark">
                                 details和summary标签怎么用？折叠内容如何实现？            </a>
        </h3>
        <a class="item-images" href="https://www.chuangxiangniao.com/p/1570096.html" title="details和summary标签怎么用？折叠内容如何实现？" target="_blank">
            <span><i class="item-images-el j-lazy" style="background-image: url('https://www.chuangxiangniao.com/wp-content/themes/justnews/themer/assets/images/lazy.png');" data-original="https://cdn.chuangxiangniao.com/www/2025/12/175417920446584.png"></i></span><span><i class="item-images-el j-lazy" style="background-image: url('https://www.chuangxiangniao.com/wp-content/themes/justnews/themer/assets/images/lazy.png');" data-original="https://cdn.chuangxiangniao.com/www/2025/12/175417920560275.png"></i></span><span><i class="item-images-el j-lazy" style="background-image: url('https://www.chuangxiangniao.com/wp-content/themes/justnews/themer/assets/images/lazy.png');" data-original="https://cdn.chuangxiangniao.com/www/2025/12/175417920544350.png"></i></span><span><i class="item-images-el j-lazy" style="background-image: url('https://www.chuangxiangniao.com/wp-content/themes/justnews/themer/assets/images/lazy.png');" data-original="https://cdn.chuangxiangniao.com/www/2025/12/175417920649009.png"></i></span>        </a>
        <div class="item-excerpt">
            <p>使用 ails> 和 标签可原生实现内容折叠与展开，无需javascript；2. 为标题且必须是 的第一个子元素，默认折叠，添加 open 属性可默认展开；3. 可通过css隐藏默认标记并自定义指示符样式，如用 ::before 实现加号/减号切换；4. 原生支持键盘导航与屏幕阅读器，具备良…</p>
        </div>
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                                        <a data-user="3" target="_blank" href="https://www.chuangxiangniao.com/user/3" class="avatar j-user-card">
                        <img alt='程序猿的头像' src='//cdn.chuangxiangniao.com/www/2025/10/2025102208472691.jpg' class='avatar avatar-60 photo' height='60' width='60' />                        <span>程序猿</span>
                    </a>
                </div>
                        <span class="item-meta-li date">2025年12月22日</span>
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                <a class="item-meta-li" href="https://www.chuangxiangniao.com/news-2" target="_blank">好文分享</a>
                        <div class="item-meta-right">
                <span class="item-meta-li views" title="阅读数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-eye"></use></svg></i>0</span><a class="item-meta-li comments" href="https://www.chuangxiangniao.com/p/1570096.html#comments" target="_blank" title="评论数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-comment"></use></svg></i>0</a><span class="item-meta-li stars" title="收藏数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-star"></use></svg></i>0</span><span class="item-meta-li likes" title="点赞数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-thumb-up"></use></svg></i>0</span>            </div>
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                <h3 class="item-title">
            <a href="https://www.chuangxiangniao.com/p/1570091.html" target="_blank" rel="bookmark">
                                 template标签的作用？HTML模板怎么定义？            </a>
        </h3>
        <a class="item-images" href="https://www.chuangxiangniao.com/p/1570091.html" title="template标签的作用？HTML模板怎么定义？" target="_blank">
            <span><i class="item-images-el j-lazy" style="background-image: url('https://www.chuangxiangniao.com/wp-content/themes/justnews/themer/assets/images/lazy.png');" data-original="https://cdn.chuangxiangniao.com/www/2025/12/175418022650314.png"></i></span><span><i class="item-images-el j-lazy" style="background-image: url('https://www.chuangxiangniao.com/wp-content/themes/justnews/themer/assets/images/lazy.png');" data-original="https://cdn.chuangxiangniao.com/www/2025/12/175418022640650.png"></i></span><span><i class="item-images-el j-lazy" style="background-image: url('https://www.chuangxiangniao.com/wp-content/themes/justnews/themer/assets/images/lazy.png');" data-original="https://cdn.chuangxiangniao.com/www/2025/12/175418022723270.png"></i></span><span><i class="item-images-el j-lazy" style="background-image: url('https://www.chuangxiangniao.com/wp-content/themes/justnews/themer/assets/images/lazy.png');" data-original="http://placeholder.png"></i></span>        </a>
        <div class="item-excerpt">
            <p>标签定义惰性html片段，页面加载时不渲染、不执行脚本、不加载资源；2. 使用javascript克隆其content属性（documentfragment）后插入dom才能激活内容；3. 相比display: none的隐藏div，不创建dom节点、不占用布局计算、更优性能；4. 在web com…</p>
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                            <div class="item-meta-li author">
                                        <a data-user="3" target="_blank" href="https://www.chuangxiangniao.com/user/3" class="avatar j-user-card">
                        <img alt='程序猿的头像' src='//cdn.chuangxiangniao.com/www/2025/10/2025102208472691.jpg' class='avatar avatar-60 photo' height='60' width='60' />                        <span>程序猿</span>
                    </a>
                </div>
                        <span class="item-meta-li date">2025年12月22日</span>
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                <a class="item-meta-li" href="https://www.chuangxiangniao.com/news-2" target="_blank">好文分享</a>
                        <div class="item-meta-right">
                <span class="item-meta-li views" title="阅读数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-eye"></use></svg></i>0</span><a class="item-meta-li comments" href="https://www.chuangxiangniao.com/p/1570091.html#comments" target="_blank" title="评论数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-comment"></use></svg></i>0</a><span class="item-meta-li stars" title="收藏数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-star"></use></svg></i>0</span><span class="item-meta-li likes" title="点赞数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-thumb-up"></use></svg></i>0</span>            </div>
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                <h3 class="item-title">
            <a href="https://www.chuangxiangniao.com/p/1570086.html" target="_blank" rel="bookmark">
                                 span标签有什么用？span和div的区别是什么？            </a>
        </h3>
        <a class="item-images" href="https://www.chuangxiangniao.com/p/1570086.html" title="span标签有什么用？span和div的区别是什么？" target="_blank">
            <span><i class="item-images-el j-lazy" style="background-image: url('https://www.chuangxiangniao.com/wp-content/themes/justnews/themer/assets/images/lazy.png');" data-original="https://cdn.chuangxiangniao.com/www/2025/12/175418418377591.png"></i></span><span><i class="item-images-el j-lazy" style="background-image: url('https://www.chuangxiangniao.com/wp-content/themes/justnews/themer/assets/images/lazy.png');" data-original="https://cdn.chuangxiangniao.com/www/2025/12/175418418317796.png"></i></span><span><i class="item-images-el j-lazy" style="background-image: url('https://www.chuangxiangniao.com/wp-content/themes/justnews/themer/assets/images/lazy.png');" data-original="https://cdn.chuangxiangniao.com/www/2025/12/175418418335201.png"></i></span><span><i class="item-images-el j-lazy" style="background-image: url('https://www.chuangxiangniao.com/wp-content/themes/justnews/themer/assets/images/lazy.png');" data-original="https://cdn.chuangxiangniao.com/www/2025/12/175418418396846.png"></i></span>        </a>
        <div class="item-excerpt">
            <p>span标签用于行内组合文本或元素以实现样式化或脚本操作，不会改变布局；1. 需对文本片段应用css样式（如变色、加粗）时使用span；2. 需通过javascript动态操作局部文本（如更新计数）时使用span；3. 结合css和js可实现高级效果（如工具提示、动画）；4. 可通过aria-lab…</p>
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                            <div class="item-meta-li author">
                                        <a data-user="3" target="_blank" href="https://www.chuangxiangniao.com/user/3" class="avatar j-user-card">
                        <img alt='程序猿的头像' src='//cdn.chuangxiangniao.com/www/2025/10/2025102208472691.jpg' class='avatar avatar-60 photo' height='60' width='60' />                        <span>程序猿</span>
                    </a>
                </div>
                        <span class="item-meta-li date">2025年12月22日</span>
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                <a class="item-meta-li" href="https://www.chuangxiangniao.com/news-2" target="_blank">好文分享</a>
                        <div class="item-meta-right">
                <span class="item-meta-li views" title="阅读数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-eye"></use></svg></i>0</span><a class="item-meta-li comments" href="https://www.chuangxiangniao.com/p/1570086.html#comments" target="_blank" title="评论数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-comment"></use></svg></i>0</a><span class="item-meta-li stars" title="收藏数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-star"></use></svg></i>0</span><span class="item-meta-li likes" title="点赞数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-thumb-up"></use></svg></i>0</span>            </div>
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                <h3 class="item-title">
            <a href="https://www.chuangxiangniao.com/p/1570079.html" target="_blank" rel="bookmark">
                                 data标签怎么用？机器可读数据如何嵌入？            </a>
        </h3>
        <a class="item-images" href="https://www.chuangxiangniao.com/p/1570079.html" title="data标签怎么用？机器可读数据如何嵌入？" target="_blank">
            <span><i class="item-images-el j-lazy" style="background-image: url('https://www.chuangxiangniao.com/wp-content/themes/justnews/themer/assets/images/lazy.png');" data-original="https://cdn.chuangxiangniao.com/www/2025/12/175418838330422.png"></i></span><span><i class="item-images-el j-lazy" style="background-image: url('https://www.chuangxiangniao.com/wp-content/themes/justnews/themer/assets/images/lazy.png');" data-original="https://cdn.chuangxiangniao.com/www/2025/12/175418838391472.png"></i></span><span><i class="item-images-el j-lazy" style="background-image: url('https://www.chuangxiangniao.com/wp-content/themes/justnews/themer/assets/images/lazy.png');" data-original="https://cdn.chuangxiangniao.com/www/2025/12/175418838388066.png"></i></span><span><i class="item-images-el j-lazy" style="background-image: url('https://www.chuangxiangniao.com/wp-content/themes/justnews/themer/assets/images/lazy.png');" data-original="https://cdn.chuangxiangniao.com/www/2025/12/175418838374376.png"></i></span>        </a>
        <div class="item-excerpt">
            <p>使用data-属性将自定义数据嵌入html元素，如data-product-id、data-price；2. 通过javascript的dataset属性访问数据，属性名自动转为驼峰命名；3. data-用于存储供javascript使用的私有数据，而aria标签用于提升可访问性，二者用途不同但可共…</p>
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                            <div class="item-meta-li author">
                                        <a data-user="3" target="_blank" href="https://www.chuangxiangniao.com/user/3" class="avatar j-user-card">
                        <img alt='程序猿的头像' src='//cdn.chuangxiangniao.com/www/2025/10/2025102208472691.jpg' class='avatar avatar-60 photo' height='60' width='60' />                        <span>程序猿</span>
                    </a>
                </div>
                        <span class="item-meta-li date">2025年12月22日</span>
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                <a class="item-meta-li" href="https://www.chuangxiangniao.com/news-2" target="_blank">好文分享</a>
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                <span class="item-meta-li views" title="阅读数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-eye"></use></svg></i>0</span><a class="item-meta-li comments" href="https://www.chuangxiangniao.com/p/1570079.html#comments" target="_blank" title="评论数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-comment"></use></svg></i>0</a><span class="item-meta-li stars" title="收藏数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-star"></use></svg></i>0</span><span class="item-meta-li likes" title="点赞数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-thumb-up"></use></svg></i>0</span>            </div>
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</li>
<li class="item item2">
        <div class="item-img">
        <a class="item-img-inner" href="https://www.chuangxiangniao.com/p/1570077.html" title="什么是main标签？网页主内容如何标记" target="_blank" rel="bookmark">
            <img width="480" height="300" src="https://www.chuangxiangniao.com/wp-content/themes/justnews/themer/assets/images/lazy.png" class="attachment-default size-default wp-post-image j-lazy" alt="什么是main标签？网页主内容如何标记" decoding="async" data-original="https://cdn.chuangxiangniao.com/www/2025/12/175419060968418.jpg?imageMogr2/crop/480x300/gravity/center" />        </a>
                <a class="item-category" href="https://www.chuangxiangniao.com/news-2" target="_blank">好文分享</a>
            </div>
        <div class="item-content">
                <h3 class="item-title">
            <a href="https://www.chuangxiangniao.com/p/1570077.html" target="_blank" rel="bookmark">
                                 什么是main标签？网页主内容如何标记            </a>
        </h3>
        <div class="item-excerpt">
            <p>ain>标签用于标识网页中最重要的核心内容，一个页面只能使用一次，且不应包含 、 、 等非主要内容；它从seo角度帮助搜索引擎快速识别页面主题，从可访问性角度帮助辅助技术用户快速跳转至主体内容；与 （独立内容单元）和 （章节区域）不同，专指整个页面的主内容区域，正确使用这些语义化标签能提升网页…</p>
        </div>
        <div class="item-meta">
                        <div class="item-meta-li author">
                                <a data-user="3" target="_blank" href="https://www.chuangxiangniao.com/user/3" class="avatar j-user-card">
                    <img alt='程序猿的头像' src='//cdn.chuangxiangniao.com/www/2025/10/2025102208472691.jpg' class='avatar avatar-60 photo' height='60' width='60' />                    <span>程序猿</span>
                </a>
            </div>
                                    <span class="item-meta-li date">2025年12月22日</span>
            <div class="item-meta-right">
                <span class="item-meta-li views" title="阅读数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-eye"></use></svg></i>0</span><a class="item-meta-li comments" href="https://www.chuangxiangniao.com/p/1570077.html#comments" target="_blank" title="评论数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-comment"></use></svg></i>0</a><span class="item-meta-li stars" title="收藏数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-star"></use></svg></i>0</span><span class="item-meta-li likes" title="点赞数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-thumb-up"></use></svg></i>0</span>            </div>
        </div>
    </div>
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<li class="item item3">
    <div class="item-content">
                <h3 class="item-title">
            <a href="https://www.chuangxiangniao.com/p/1570072.html" target="_blank" rel="bookmark">
                                 time标签的作用是什么？日期时间怎么标记？            </a>
        </h3>
        <a class="item-images" href="https://www.chuangxiangniao.com/p/1570072.html" title="time标签的作用是什么？日期时间怎么标记？" target="_blank">
            <span><i class="item-images-el j-lazy" style="background-image: url('https://www.chuangxiangniao.com/wp-content/themes/justnews/themer/assets/images/lazy.png');" data-original="https://cdn.chuangxiangniao.com/www/2025/12/175419078213312.png"></i></span><span><i class="item-images-el j-lazy" style="background-image: url('https://www.chuangxiangniao.com/wp-content/themes/justnews/themer/assets/images/lazy.png');" data-original="https://cdn.chuangxiangniao.com/www/2025/12/175419078260759.png"></i></span><span><i class="item-images-el j-lazy" style="background-image: url('https://www.chuangxiangniao.com/wp-content/themes/justnews/themer/assets/images/lazy.png');" data-original="https://cdn.chuangxiangniao.com/www/2025/12/175419078372678.png"></i></span><span><i class="item-images-el j-lazy" style="background-image: url('https://www.chuangxiangniao.com/wp-content/themes/justnews/themer/assets/images/lazy.png');" data-original="https://cdn.chuangxiangniao.com/www/2025/12/175419078361920.png"></i></span>        </a>
        <div class="item-excerpt">
            <p>time标签的核心作用是语义化地标记日期和时间信息，1. 它通过datetime属性提供机器可读的iso 8601标准格式，使浏览器、搜索引擎和辅助技术能准确解析时间内容；2. 提升网页可访问性，帮助屏幕阅读器用户理解并操作时间信息；3. 有利于seo，增强内容新鲜度识别和搜索结果展示；4. 避免常…</p>
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                            <div class="item-meta-li author">
                                        <a data-user="3" target="_blank" href="https://www.chuangxiangniao.com/user/3" class="avatar j-user-card">
                        <img alt='程序猿的头像' src='//cdn.chuangxiangniao.com/www/2025/10/2025102208472691.jpg' class='avatar avatar-60 photo' height='60' width='60' />                        <span>程序猿</span>
                    </a>
                </div>
                        <span class="item-meta-li date">2025年12月22日</span>
                            <span class="item-meta-li dot">•</span>
                <a class="item-meta-li" href="https://www.chuangxiangniao.com/news-2" target="_blank">好文分享</a>
                        <div class="item-meta-right">
                <span class="item-meta-li views" title="阅读数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-eye"></use></svg></i>0</span><a class="item-meta-li comments" href="https://www.chuangxiangniao.com/p/1570072.html#comments" target="_blank" title="评论数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-comment"></use></svg></i>0</a><span class="item-meta-li stars" title="收藏数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-star"></use></svg></i>0</span><span class="item-meta-li likes" title="点赞数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-thumb-up"></use></svg></i>0</span>            </div>
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<li class="item item3">
    <div class="item-content">
                <h3 class="item-title">
            <a href="https://www.chuangxiangniao.com/p/1570044.html" target="_blank" rel="bookmark">
                                 什么是div标签？div元素在HTML中如何使用？            </a>
        </h3>
        <a class="item-images" href="https://www.chuangxiangniao.com/p/1570044.html" title="什么是div标签？div元素在HTML中如何使用？" target="_blank">
            <span><i class="item-images-el j-lazy" style="background-image: url('https://www.chuangxiangniao.com/wp-content/themes/justnews/themer/assets/images/lazy.png');" data-original="https://cdn.chuangxiangniao.com/www/2025/12/175412250448981.png"></i></span><span><i class="item-images-el j-lazy" style="background-image: url('https://www.chuangxiangniao.com/wp-content/themes/justnews/themer/assets/images/lazy.png');" data-original="https://cdn.chuangxiangniao.com/www/2025/12/175412250478079.png"></i></span><span><i class="item-images-el j-lazy" style="background-image: url('https://www.chuangxiangniao.com/wp-content/themes/justnews/themer/assets/images/lazy.png');" data-original="https://cdn.chuangxiangniao.com/www/2025/12/175412250576605.png"></i></span><span><i class="item-images-el j-lazy" style="background-image: url('https://www.chuangxiangniao.com/wp-content/themes/justnews/themer/assets/images/lazy.png');" data-original="http://image.jpg"></i></span>        </a>
        <div class="item-excerpt">
            <p>使用css控制div的样式和布局可通过内联样式、内部样式表或外部样式表实现，例如设置背景色、宽高，或使用flexbox实现居中布局；div是块级元素，常用于布局，而span是行内元素，用于文本样式化；为避免过度使用div，应优先使用html5语义化标签如article、nav、header等，合理命…</p>
        </div>
        <div class="item-meta">
                            <div class="item-meta-li author">
                                        <a data-user="3" target="_blank" href="https://www.chuangxiangniao.com/user/3" class="avatar j-user-card">
                        <img alt='程序猿的头像' src='//cdn.chuangxiangniao.com/www/2025/10/2025102208472691.jpg' class='avatar avatar-60 photo' height='60' width='60' />                        <span>程序猿</span>
                    </a>
                </div>
                        <span class="item-meta-li date">2025年12月22日</span>
                            <span class="item-meta-li dot">•</span>
                <a class="item-meta-li" href="https://www.chuangxiangniao.com/news-2" target="_blank">好文分享</a>
                        <div class="item-meta-right">
                <span class="item-meta-li views" title="阅读数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-eye"></use></svg></i>0</span><a class="item-meta-li comments" href="https://www.chuangxiangniao.com/p/1570044.html#comments" target="_blank" title="评论数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-comment"></use></svg></i>0</a><span class="item-meta-li stars" title="收藏数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-star"></use></svg></i>0</span><span class="item-meta-li likes" title="点赞数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-thumb-up"></use></svg></i>0</span>            </div>
        </div>
    </div>
</li>
<li class="item item3">
    <div class="item-content">
                <h3 class="item-title">
            <a href="https://www.chuangxiangniao.com/p/1570039.html" target="_blank" rel="bookmark">
                                 param标签的用途是什么？插件参数怎么设置？            </a>
        </h3>
        <a class="item-images" href="https://www.chuangxiangniao.com/p/1570039.html" title="param标签的用途是什么？插件参数怎么设置？" target="_blank">
            <span><i class="item-images-el j-lazy" style="background-image: url('https://www.chuangxiangniao.com/wp-content/themes/justnews/themer/assets/images/lazy.png');" data-original="https://cdn.chuangxiangniao.com/www/2025/12/175412317154736.png"></i></span><span><i class="item-images-el j-lazy" style="background-image: url('https://www.chuangxiangniao.com/wp-content/themes/justnews/themer/assets/images/lazy.png');" data-original="https://cdn.chuangxiangniao.com/www/2025/12/175412317289731.png"></i></span><span><i class="item-images-el j-lazy" style="background-image: url('https://www.chuangxiangniao.com/wp-content/themes/justnews/themer/assets/images/lazy.png');" data-original="https://cdn.chuangxiangniao.com/www/2025/12/175412317278111.png"></i></span><span><i class="item-images-el j-lazy" style="background-image: url('https://www.chuangxiangniao.com/wp-content/themes/justnews/themer/assets/images/lazy.png');" data-original="https://cdn.chuangxiangniao.com/www/2025/12/175412317386978.png"></i></span>        </a>
        <div class="item-excerpt">
            <p>param标签用于为html中的object或已废弃的applet元素提供参数，通过name和value属性定义配置项，如flash动画的源文件、质量、背景色等；2. 现代插件参数设置主要通过javascript配置对象、html data-属性或前端框架的props/inputs实现，使组件行为可…</p>
        </div>
        <div class="item-meta">
                            <div class="item-meta-li author">
                                        <a data-user="3" target="_blank" href="https://www.chuangxiangniao.com/user/3" class="avatar j-user-card">
                        <img alt='程序猿的头像' src='//cdn.chuangxiangniao.com/www/2025/10/2025102208472691.jpg' class='avatar avatar-60 photo' height='60' width='60' />                        <span>程序猿</span>
                    </a>
                </div>
                        <span class="item-meta-li date">2025年12月22日</span>
                            <span class="item-meta-li dot">•</span>
                <a class="item-meta-li" href="https://www.chuangxiangniao.com/news-2" target="_blank">好文分享</a>
                        <div class="item-meta-right">
                <span class="item-meta-li views" title="阅读数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-eye"></use></svg></i>0</span><a class="item-meta-li comments" href="https://www.chuangxiangniao.com/p/1570039.html#comments" target="_blank" title="评论数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-comment"></use></svg></i>0</a><span class="item-meta-li stars" title="收藏数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-star"></use></svg></i>0</span><span class="item-meta-li likes" title="点赞数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-thumb-up"></use></svg></i>0</span>            </div>
        </div>
    </div>
</li>
<li class="item item2">
        <div class="item-img">
        <a class="item-img-inner" href="https://www.chuangxiangniao.com/p/1570031.html" title="HTML5视频怎么添加？video标签支持哪些格式？" target="_blank" rel="bookmark">
            <img width="480" height="300" src="https://www.chuangxiangniao.com/wp-content/themes/justnews/themer/assets/images/lazy.png" class="attachment-default size-default wp-post-image j-lazy" alt="HTML5视频怎么添加？video标签支持哪些格式？" decoding="async" data-original="https://cdn.chuangxiangniao.com/www/2025/12/175412388626260.jpg?imageMogr2/crop/480x300/gravity/center" />        </a>
                <a class="item-category" href="https://www.chuangxiangniao.com/news-2" target="_blank">好文分享</a>
            </div>
        <div class="item-content">
                <h3 class="item-title">
            <a href="https://www.chuangxiangniao.com/p/1570031.html" target="_blank" rel="bookmark">
                                 HTML5视频怎么添加？video标签支持哪些格式？            </a>
        </h3>
        <div class="item-excerpt">
            <p>html5视频在某些浏览器无法播放的主要原因是视频格式和编码不兼容。1. 首先需提供多种格式，如mp4（h.264编码）、webm（vp8/vp9编码）和ogg（theora编码），以覆盖不同浏览器的支持范围；2. 确保视频文件内部编码正确，即使文件后缀为.mp4，也必须使用h.264视频和aac音…</p>
        </div>
        <div class="item-meta">
                        <div class="item-meta-li author">
                                <a data-user="3" target="_blank" href="https://www.chuangxiangniao.com/user/3" class="avatar j-user-card">
                    <img alt='程序猿的头像' src='//cdn.chuangxiangniao.com/www/2025/10/2025102208472691.jpg' class='avatar avatar-60 photo' height='60' width='60' />                    <span>程序猿</span>
                </a>
            </div>
                                    <span class="item-meta-li date">2025年12月22日</span>
            <div class="item-meta-right">
                <span class="item-meta-li views" title="阅读数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-eye"></use></svg></i>0</span><a class="item-meta-li comments" href="https://www.chuangxiangniao.com/p/1570031.html#comments" target="_blank" title="评论数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-comment"></use></svg></i>0</a><span class="item-meta-li stars" title="收藏数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-star"></use></svg></i>0</span><span class="item-meta-li likes" title="点赞数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-thumb-up"></use></svg></i>0</span>            </div>
        </div>
    </div>
</li>
<li class="item item3">
    <div class="item-content">
                <h3 class="item-title">
            <a href="https://www.chuangxiangniao.com/p/1570030.html" target="_blank" rel="bookmark">
                                 main标签是什么？网页主要内容如何标记？            </a>
        </h3>
        <a class="item-images" href="https://www.chuangxiangniao.com/p/1570030.html" title="main标签是什么？网页主要内容如何标记？" target="_blank">
            <span><i class="item-images-el j-lazy" style="background-image: url('https://www.chuangxiangniao.com/wp-content/themes/justnews/themer/assets/images/lazy.png');" data-original="https://img.php.cn/upload/article/001/221/864/175412412437396889.png"></i></span><span><i class="item-images-el j-lazy" style="background-image: url('https://www.chuangxiangniao.com/wp-content/themes/justnews/themer/assets/images/lazy.png');" data-original="https://img.php.cn/upload/article/001/221/864/175412412437472017.png"></i></span><span><i class="item-images-el j-lazy" style="background-image: url('https://www.chuangxiangniao.com/wp-content/themes/justnews/themer/assets/images/lazy.png');" data-original="https://img.php.cn/upload/article/001/221/864/175412412437497152.png"></i></span><span><i class="item-images-el j-lazy" style="background-image: url('https://www.chuangxiangniao.com/wp-content/themes/justnews/themer/assets/images/lazy.png');" data-original="https://img.php.cn/upload/article/001/221/864/175412412437425931.png"></i></span>        </a>
        <div class="item-excerpt">
            <p>main 标签用于定义网页的主体内容，一个页面只能有一个 main 标签，且不能是 article、aside、footer、header 或 nav 的后代，它应包含页面最核心的内容如文章标题和正文，搜索引擎和辅助技术依赖它识别主要内容，从而提升 seo 和可访问性；article 标签表示独立内…</p>
        </div>
        <div class="item-meta">
                            <div class="item-meta-li author">
                                        <a data-user="3" target="_blank" href="https://www.chuangxiangniao.com/user/3" class="avatar j-user-card">
                        <img alt='程序猿的头像' src='//cdn.chuangxiangniao.com/www/2025/10/2025102208472691.jpg' class='avatar avatar-60 photo' height='60' width='60' />                        <span>程序猿</span>
                    </a>
                </div>
                        <span class="item-meta-li date">2025年12月22日</span>
                            <span class="item-meta-li dot">•</span>
                <a class="item-meta-li" href="https://www.chuangxiangniao.com/news-2" target="_blank">好文分享</a>
                        <div class="item-meta-right">
                <span class="item-meta-li views" title="阅读数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-eye"></use></svg></i>0</span><a class="item-meta-li comments" href="https://www.chuangxiangniao.com/p/1570030.html#comments" target="_blank" title="评论数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-comment"></use></svg></i>0</a><span class="item-meta-li stars" title="收藏数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-star"></use></svg></i>0</span><span class="item-meta-li likes" title="点赞数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-thumb-up"></use></svg></i>0</span>            </div>
        </div>
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    <div class="item-content">
                <h3 class="item-title">
            <a href="https://www.chuangxiangniao.com/p/1570029.html" target="_blank" rel="bookmark">
                                 HTML文档的进度条是什么？如何修改HTML文件？            </a>
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