uTools-Manuals/docs/jQuery/removeAttr.html

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<h1 class="entry-title">.removeAttr()</h1>
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						所属分类：<span class="category"><a href="/category/attributes/">DOM 属性</a></span><span class="category-divider"> | </span><span class="category"><a href="/category/manipulation/">DOM 操作</a> &gt; <a href="/category/manipulation/general-attributes/">通用属性操作</a></span>
<span class="pull-right">英文文档：<a href="https://api.jquery123.com/removeAttr/" target="_blank">.removeAttr()</a></span>
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<span class="name">.removeAttr( attributeName )</span><span class="returns">返回: <a href="/Types/#jQuery">jQuery</a></span>
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<p class="desc"><strong>描述: </strong>为匹配的元素集合中的每个元素中移除一个属性（attribute）。</p>
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<span class="version-details">添加的版本: <a href="/category/version/1.0/">1.0</a></span>.removeAttr( attributeName )</h4>
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<div><strong>attributeName</strong></div>
<div>类型: <a href="/Types/#String">String</a>
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<div>要移除的属性名,从1.7版本开始，它可以是一个空格分隔的属性列表。
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<p><code>.removeAttr()</code> 方法使用原生的 JavaScript <code>removeAttribute()</code> 函数,但是它的优点是可以直接在一个 jQuery 对象上调用该方法，并且它解决了跨浏览器的属性名不同的问题。</p>
<p><strong>注意:</strong> Internet Explorer 6， 7 ，或8中，使用<code>.removeAttr()</code>删除一个内联<code>onclick</code> 事件处理程序没有实现，为了避免潜在的问题，使用 <code>.prop()</code>代替：</p>
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<pre><div class="container"><div class="line"><code>$element.prop(<span class="string">"onclick"</span>, <span class="literal">null</span>);</code></div></div><div class="container"><div class="line"><code>console.log(<span class="string">"onclick property: "</span>, $element[<span class="number">0</span>].onclick);</code></div></div></pre>
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<section class="entry-examples" id="entry-examples"><header><h2 class="underline">例子:</h2></header><div class="entry-example" id="example-0">
<h4><span class="desc">点击按钮，添加或删除按钮后面 input 元素的 title 属性。</span></h4>
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<pre><div class="container"><div class="line"><code><span class="doctype">&lt;!DOCTYPE html&gt;</span></code></div></div><div class="container"><div class="line"><code><span class="tag">&lt;<span class="title">html</span>&gt;</span></code></div></div><div class="container"><div class="line"><code><span class="tag">&lt;<span class="title">head</span>&gt;</span></code></div></div><div class="container"><div class="line"><code>  <span class="tag">&lt;<span class="title">script</span> <span class="attribute">src</span>=<span class="value">"https://code.jquery.com/jquery-latest.js"</span>&gt;</span><span class="javascript"></span><span class="tag">&lt;/<span class="title">script</span>&gt;</span></code></div></div><div class="container"><div class="line"><code><span class="tag">&lt;/<span class="title">head</span>&gt;</span></code></div></div><div class="container"><div class="line"><code><span class="tag">&lt;<span class="title">body</span>&gt;</span></code></div></div><div class="container"><div class="line"><code>  <span class="tag">&lt;<span class="title">button</span>&gt;</span>Enable<span class="tag">&lt;/<span class="title">button</span>&gt;</span></code></div></div><div class="container"><div class="line"><code><span class="tag">&lt;<span class="title">input</span> <span class="attribute">type</span>=<span class="value">"text"</span> <span class="attribute">title</span>=<span class="value">"hello there"</span> /&gt;</span></code></div></div><div class="container"><div class="line"><code><span class="tag">&lt;<span class="title">div</span> <span class="attribute">id</span>=<span class="value">"log"</span>&gt;</span><span class="tag">&lt;/<span class="title">div</span>&gt;</span></code></div></div><div class="container"><div class="line"><code> </code></div></div><div class="container"><div class="line"><code><span class="tag">&lt;<span class="title">script</span>&gt;</span><span class="javascript"></span></code></div></div><div class="container"><div class="line"><code>(<span class="keyword">function</span>() {</code></div></div><div class="container"><div class="line"><code>  <span class="keyword">var</span> inputTitle = $(<span class="string">"input"</span>).attr(<span class="string">"title"</span>);</code></div></div><div class="container"><div class="line"><code>  $(<span class="string">"button"</span>).click(<span class="function"><span class="keyword">function</span> <span class="params">()</span> {</span></code></div></div><div class="container"><div class="line"><code>    <span class="keyword">var</span> input = $(<span class="keyword">this</span>).next();</code></div></div><div class="container"><div class="line"><code> </code></div></div><div class="container"><div class="line"><code>    <span class="keyword">if</span> ( input.attr(<span class="string">"title"</span>) == inputTitle ) {</code></div></div><div class="container"><div class="line"><code>      input.removeAttr(<span class="string">"title"</span>)</code></div></div><div class="container"><div class="line"><code>    } <span class="keyword">else</span> {</code></div></div><div class="container"><div class="line"><code>      input.attr(<span class="string">"title"</span>, inputTitle);</code></div></div><div class="container"><div class="line"><code>    }</code></div></div><div class="container"><div class="line"><code> </code></div></div><div class="container"><div class="line"><code>    $(<span class="string">"#log"</span>).html( <span class="string">"input title is now "</span> + input.attr(<span class="string">"title"</span>) );</code></div></div><div class="container"><div class="line"><code>  });</code></div></div><div class="container"><div class="line"><code>})();</code></div></div><div class="container"><div class="line"><code><span class="tag">&lt;/<span class="title">script</span>&gt;</span></code></div></div><div class="container"><div class="line"><code> </code></div></div><div class="container"><div class="line"><code><span class="tag">&lt;/<span class="title">body</span>&gt;</span></code></div></div><div class="container"><div class="line"><code><span class="tag">&lt;/<span class="title">html</span>&gt;</span></code></div></div></pre>
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<h4>Demo:</h4>
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