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80 lines
7.8 KiB
HTML
80 lines
7.8 KiB
HTML
<article class="" id="post-">
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<header class="entry-header">
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<h1 class="entry-title">.removeProp()</h1>
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<div class="entry-meta">
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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> > <a href="/category/manipulation/general-attributes/">通用属性操作</a></span>
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<span class="pull-right">英文文档：<a href="https://api.jquery123.com/removeProp/" target="_blank">.removeProp()</a></span>
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</div><!-- .entry-meta -->
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</header><!-- .entry-header -->
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<!-- .entry-header -->
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<div class="entry-content">
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<article class="entry method" id="removeProp1"><h2 class="section-title">
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<span class="name">.removeProp( propertyName )</span><span class="returns">返回: <a href="/Types/#jQuery">jQuery</a></span>
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</h2>
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<div class="entry-wrapper">
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<p class="desc"><strong>描述: </strong>为集合中匹配的元素删除一个属性（property）。</p>
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<ul class="signatures"><li class="signature" id="removeProp-propertyName">
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<h4 class="name">
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<span class="version-details">添加的版本: <a href="/category/version/1.6/">1.6</a></span>.removeProp( propertyName )</h4>
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<ul><li>
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<div><strong>propertyName</strong></div>
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<div>类型: <a href="/Types/#String">String</a>
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</div>
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<div>要移除属性的名称.</div>
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</li></ul>
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</li></ul>
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<div class="longdesc" id="entry-longdesc">
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<p><code>.removeProp()</code>方法用来删除由<a href="/prop"><code>.prop()</code></a>方法设置的属性集。</p>
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<p>
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若尝试移除 DOM 元素或 <code>window</code> 对象上一些内建的 属性（ property ） ，浏览器可能会产生错误。如果真的那么做了，那么 jQuery 首先会将 属性（ property ） 设置成 <code>undefined</code> ，然后忽略任何浏览器产生的错误。一般来说,只需要移除自定义的 属性（ property ） ，而不是移除内建的（原生的）属性（ property ）。
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</p>
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<p><strong>注意:</strong> 不要使用此方法来删除原生的属性（ property ），比如checked, disabled, 或者 selected。这将完全移除该属性，一旦移除，不能再次被添加到元素上。使用<code><a href="/prop">.prop()</a></code>来设置这些属性设置为<code>false</code>代替。</p>
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</div>
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<h3>Additional Notes（其他注意事项）:</h3>
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<div class="longdesc"><ul>
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<li>在Internet Explorer之前的版本9，使用<a href="/prop"><code>.prop()</code></a>设置DOM元素的属性进行赋值时，若所赋值的类型不是基本类型(number, string, 或 boolean)，而且也没有使用 <a href="/removeProp"><code>.removeProp()</code></a> 方法在 DOM 元素从文档中被移除之前。为了安全的在 DOM 对象上进行赋值而不用担心内存泄露问题，请使用 <a href="/data"><code>.data()</code></a> 方法 。</li>
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</ul></div>
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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">
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<h4><span class="desc">设置一个段落数字属性，然后将其删除。 </span></h4>
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<div class="syntaxhighlighter xml ">
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<table>
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<tbody>
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<tr>
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</td>
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<td class="code">
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<pre><div class="container"><div class="line"><code><span class="doctype"><!DOCTYPE html></span></code></div></div><div class="container"><div class="line"><code><span class="tag"><<span class="title">html</span>></span></code></div></div><div class="container"><div class="line"><code><span class="tag"><<span class="title">head</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">style</span>></span><span class="css"></span></code></div></div><div class="container"><div class="line"><code> <span class="tag">img</span> <span class="rules">{ <span class="rule"><span class="attribute">padding</span>:<span class="value"><span class="number">10</span>px;</span></span> <span class="rule">}</span></span></code></div></div><div class="container"><div class="line"><code> <span class="tag">div</span> <span class="rules">{ <span class="rule"><span class="attribute">color</span>:<span class="value">red;</span></span> <span class="rule"><span class="attribute">font-size</span>:<span class="value"><span class="number">24</span>px;</span></span> <span class="rule">}</span></span></code></div></div><div class="container"><div class="line"><code><span class="tag"></<span class="title">style</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">script</span> <span class="attribute">src</span>=<span class="value">"https://code.jquery.com/jquery-latest.js"</span>></span><span class="javascript"></span><span class="tag"></<span class="title">script</span>></span></code></div></div><div class="container"><div class="line"><code><span class="tag"></<span class="title">head</span>></span></code></div></div><div class="container"><div class="line"><code><span class="tag"><<span class="title">body</span>></span></code></div></div><div class="container"><div class="line"><code> </code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">p</span>></span><span class="tag"></<span class="title">p</span>></span></code></div></div><div class="container"><div class="line"><code> </code></div></div><div class="container"><div class="line"><code><span class="tag"><<span class="title">script</span>></span><span class="javascript"></span></code></div></div><div class="container"><div class="line"><code><span class="keyword">var</span> $para = $(<span class="string">"p"</span>);</code></div></div><div class="container"><div class="line"><code>$para.prop(<span class="string">"luggageCode"</span>, <span class="number">1234</span>);</code></div></div><div class="container"><div class="line"><code>$para.append(<span class="string">"The secret luggage code is: "</span>, String($para.prop(<span class="string">"luggageCode"</span>)), <span class="string">". "</span>);</code></div></div><div class="container"><div class="line"><code>$para.removeProp(<span class="string">"luggageCode"</span>);</code></div></div><div class="container"><div class="line"><code>$para.append(<span class="string">"Now the secret luggage code is: "</span>, String($para.prop(<span class="string">"luggageCode"</span>)), <span class="string">". "</span>);</code></div></div><div class="container"><div class="line"><code> </code></div></div><div class="container"><div class="line"><code><span class="tag"></<span class="title">script</span>></span></code></div></div><div class="container"><div class="line"><code> </code></div></div><div class="container"><div class="line"><code><span class="tag"></<span class="title">body</span>></span></code></div></div><div class="container"><div class="line"><code><span class="tag"></<span class="title">html</span>></span></code></div></div></pre>
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</td>
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</tr>
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</tbody>
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</table>
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</div>
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<h4>Demo:</h4>
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<div class="demo code-demo"></div>
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</div></section>
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</div></article> </div>
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</article> |