uTools-Manuals/docs/jQuery/undelegate.html

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<h1 class="entry-title">.undelegate()</h1>
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						所属分类：<span class="category"><a href="/category/events/">事件</a> &gt; <a href="/category/events/event-handler-attachment/">绑定事件处理器</a></span><span class="category-divider"> | </span><span class="category"><a href="/category/deprecated/">弃用</a> &gt; <a href="/category/deprecated/deprecated-3.0/">3.0 版本弃用的 API</a></span>
<span class="pull-right">英文文档：<a href="https://api.jquery123.com/undelegate/" target="_blank">.undelegate()</a></span>
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<article class="entry method" id="undelegate1"><h2 class="section-title">
<span class="name">.undelegate()</span><span class="returns">返回: <a href="/Types/#jQuery">jQuery</a></span>
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<p class="desc"><strong>描述: </strong>
			  删除当前选择器匹配的所有元素的事件处理程序，根据一组特定根元素的集合。</p>
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<span class="version-details">添加的版本: <a href="/category/version/1.4.2/">1.4.2</a></span>.undelegate()</h4>
<ul><li><div class="null-signature">This method does not accept any arguments.</div></li></ul>
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<li class="signature" id="undelegate-selector-eventType">
<h4 class="name">
<span class="version-details">添加的版本: <a href="/category/version/1.4.2/">1.4.2</a></span>.undelegate( selector, eventType )</h4>
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<div><strong>selector</strong></div>
<div>类型: <a href="/Types/#String">String</a>
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<div>选择器字符串，用于过滤器触发事件的元素。</div>
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<div><strong>eventType</strong></div>
<div>类型: <a href="/Types/#String">String</a>
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<div>一个包含一个或多个用空格隔开的JavaScript事件类型的字符串，比如"click"或"keydown"。</div>
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<li class="signature" id="undelegate-selector-eventType-handlereventObject">
<h4 class="name">
<span class="version-details">添加的版本: <a href="/category/version/1.4.2/">1.4.2</a></span>.undelegate( selector, eventType, handler(eventObject) )</h4>
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<div><strong>selector</strong></div>
<div>类型: <a href="/Types/#String">String</a>
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<div>选择器字符串，用于过滤器触发事件的元素。</div>
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<div><strong>eventType</strong></div>
<div>类型: <a href="/Types/#String">String</a>
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<div>一个包含一个或多个用空格隔开的JavaScript事件类型的字符串，比如"click"或"keydown"。</div>
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<div><strong>handler(eventObject)</strong></div>
<div>类型: <a href="/Types/#Function">Function</a>()</div>
<div>每当事件触发时执行的函数。</div>
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<li class="signature" id="undelegate-selector-events">
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<span class="version-details">添加的版本: <a href="/category/version/1.4.3/">1.4.3</a></span>.undelegate( selector, events )</h4>
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<div><strong>selector</strong></div>
<div>类型: <a href="/Types/#String">String</a>
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<div>选择器字符串，用于过滤器触发事件的元素。</div>
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<div><strong>events</strong></div>
<div>类型: <a href="/Types/#PlainObject">PlainObject</a>
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<div>一个或多个事件类型和以前绑定的函数组成的一个对象，用来以解除他们（处理程序）。</div>
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<li class="signature" id="undelegate-namespace">
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<span class="version-details">添加的版本: <a href="/category/version/1.6/">1.6</a></span>.undelegate( namespace )</h4>
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<div><strong>namespace</strong></div>
<div>类型: <a href="/Types/#String">String</a>
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<div>一个字符串，其中包含一个命名空间，以解除所有事件。</div>
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<div class="longdesc" id="entry-longdesc">
<p><code>.undelegate</code>是用来移除使用<a href="/delegate">.delegate()</a>的方式已经绑定的事件处理程序。<strong>从 jQuery 1.7 开始</strong><a href="/on"><code>.on()</code></a> 和 <a href="/off"><code>.off()</code></a>方法是最好的元素上附加和移除事件处理程序的方法。</p>
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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>Example: <span class="desc">可以绑定和取消绑定事件的彩色按钮。</span>
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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">style</span>&gt;</span><span class="css"></span></code></div></div><div class="container"><div class="line"><code><span class="tag">button</span> <span class="rules">{ <span class="rule"><span class="attribute">margin</span>:<span class="value"><span class="number">5</span>px;</span></span> <span class="rule">}</span></span></code></div></div><div class="container"><div class="line"><code><span class="tag">button</span><span class="id">#theone</span> <span class="rules">{ <span class="rule"><span class="attribute">color</span>:<span class="value">red;</span></span> <span class="rule"><span class="attribute">background</span>:<span class="value">yellow;</span></span> <span class="rule">}</span></span></code></div></div><div class="container"><div class="line"><code><span class="tag">&lt;/<span class="title">style</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> <span class="attribute">id</span>=<span class="value">"theone"</span>&gt;</span>Does nothing...<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">button</span> <span class="attribute">id</span>=<span class="value">"bind"</span>&gt;</span>Bind Click<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">button</span> <span class="attribute">id</span>=<span class="value">"unbind"</span>&gt;</span>Unbind Click<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">div</span> <span class="attribute">style</span>=<span class="value">"display:none;"</span>&gt;</span>Click!<span class="tag">&lt;/<span class="title">div</span>&gt;</span></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="function"><span class="keyword">function</span> <span class="title">aClick</span><span class="params">()</span> {</span></code></div></div><div class="container"><div class="line"><code>  $(<span class="string">"div"</span>).show().fadeOut(<span class="string">"slow"</span>);</code></div></div><div class="container"><div class="line"><code>}</code></div></div><div class="container"><div class="line"><code>$(<span class="string">"#bind"</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>  $(<span class="string">"body"</span>).delegate(<span class="string">"#theone"</span>, <span class="string">"click"</span>, aClick)</code></div></div><div class="container"><div class="line"><code>    .find(<span class="string">"#theone"</span>).text(<span class="string">"Can Click!"</span>);</code></div></div><div class="container"><div class="line"><code>});</code></div></div><div class="container"><div class="line"><code>$(<span class="string">"#unbind"</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>  $(<span class="string">"body"</span>).undelegate(<span class="string">"#theone"</span>, <span class="string">"click"</span>, aClick)</code></div></div><div class="container"><div class="line"><code>    .find(<span class="string">"#theone"</span>).text(<span class="string">"Does nothing..."</span>);</code></div></div><div class="container"><div class="line"><code>});</code></div></div><div class="container"><div class="line"><code><span class="tag">&lt;/<span class="title">script</span>&gt;</span></code></div></div><div class="container"><div class="line"><code> </code></div></div><div class="container"><div class="line"><code><span class="tag">&lt;/<span class="title">body</span>&gt;</span></code></div></div><div class="container"><div class="line"><code><span class="tag">&lt;/<span class="title">html</span>&gt;</span></code></div></div></pre>
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<h4>Demo:</h4>
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<div class="entry-example" id="example-1">
<h4>Example: <span class="desc">解除绑定的所有段落都从委托的事件:</span>
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<pre><div class="container"><div class="line"><code>$(<span class="string">"p"</span>).undelegate()</code></div></div></pre>
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<h4>Example: <span class="desc">解除绑定的所有段落的所有委托点击事件:</span>
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<pre><div class="container"><div class="line"><code>$(<span class="string">"p"</span>).undelegate( <span class="string">"click"</span> )</code></div></div></pre>
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<h4>Example: <span class="desc">为了undelegate只是一个以前绑定的处理程序，通过在作为第三个参数的函数：</span>
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<pre><div class="container"><div class="line"><code><span class="keyword">var</span> foo = <span class="function"><span class="keyword">function</span> <span class="params">()</span> {</span></code></div></div><div class="container"><div class="line"><code>  <span class="comment">// code to handle some kind of event</span></code></div></div><div class="container"><div class="line"><code>};</code></div></div><div class="container"><div class="line"><code> </code></div></div><div class="container"><div class="line"><code><span class="comment">// ... now foo will be called when paragraphs are clicked ...</span></code></div></div><div class="container"><div class="line"><code>$(<span class="string">"body"</span>).delegate(<span class="string">"p"</span>, <span class="string">"click"</span>, foo);</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="comment">// ... foo will no longer be called.</span></code></div></div><div class="container"><div class="line"><code>$(<span class="string">"body"</span>).undelegate(<span class="string">"p"</span>, <span class="string">"click"</span>, foo); </code></div></div></pre>
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<div class="entry-example" id="example-4">
<h4>Example: <span class="desc">为了拆散他们的命名空间的所有委托事件：</span>
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<pre><div class="container"><div class="line"><code><span class="keyword">var</span> foo = <span class="function"><span class="keyword">function</span> <span class="params">()</span> {</span></code></div></div><div class="container"><div class="line"><code>  <span class="comment">// code to handle some kind of event</span></code></div></div><div class="container"><div class="line"><code>};</code></div></div><div class="container"><div class="line"><code> </code></div></div><div class="container"><div class="line"><code><span class="comment">// delegate events under the ".whatever" namespace</span></code></div></div><div class="container"><div class="line"><code>$(<span class="string">"form"</span>).delegate(<span class="string">":button"</span>, <span class="string">"click.whatever"</span>, foo);</code></div></div><div class="container"><div class="line"><code> </code></div></div><div class="container"><div class="line"><code>$(<span class="string">"form"</span>).delegate(<span class="string">"input[type='text']"</span>, <span class="string">"keypress.whatever"</span>, foo);</code></div></div><div class="container"><div class="line"><code> </code></div></div><div class="container"><div class="line"><code><span class="comment">// unbind all events delegated under the ".whatever" namespace</span></code></div></div><div class="container"><div class="line"><code> </code></div></div><div class="container"><div class="line"><code>$(<span class="string">"form"</span>).undelegate(<span class="string">".whatever"</span>);</code></div></div></pre>
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