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115 lines
12 KiB
HTML
115 lines
12 KiB
HTML
<article class="" id="post-">
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<header class="entry-header">
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<h1 class="entry-title">event.target</h1>
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<div class="entry-meta">
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所属分类：<span class="category"><a href="/category/events/">事件</a> > <a href="/category/events/event-object/">事件对象</a></span>
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<span class="pull-right">英文文档：<a href="https://api.jquery123.com/event.target/" target="_blank">event.target</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 property" id="event-target1"><h2 class="section-title">
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<span>event.target</span><span class="returns">返回: <a href="/Types/#Element">Element</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> 触发事件的DOM元素。 </p>
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<ul class="signatures"><li class="signature"><h4 class="name">
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<span class="version-details">添加的版本: <a href="/category/version/1.0/">1.0</a></span>event.target</h4></li></ul>
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<div class="longdesc" id="entry-longdesc">
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<p>
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<code>target</code> 属性可以是注册事件时的元素，或者它的子元素。通常用于比较 <code>event.target</code> 和 <code>this</code> 来确定事件是不是由于冒泡而触发的。经常用于事件冒泡时处理事件委托。</p>
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</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>Example: <span class="desc">显示点击元素的标签名。</span>
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</h4>
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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">span</span>, <span class="tag">strong</span>, <span class="tag">p</span> <span class="rules">{</span></code></div></div><div class="container"><div class="line"><code> <span class="rule"><span class="attribute">padding</span>:<span class="value"> <span class="number">8</span>px;</span></span> <span class="rule"><span class="attribute">display</span>:<span class="value"> block;</span></span> <span class="rule"><span class="attribute">border</span>:<span class="value"> <span class="number">1</span>px solid <span class="hexcolor">#999</span>;</span></span> <span class="rule">}</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">div</span> <span class="attribute">id</span>=<span class="value">"log"</span>></span><span class="tag"></<span class="title">div</span>></span></code></div></div><div class="container"><div class="line"><code><span class="tag"><<span class="title">div</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">p</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">strong</span>></span><span class="tag"><<span class="title">span</span>></span>click<span class="tag"></<span class="title">span</span>></span><span class="tag"></<span class="title">strong</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"></<span class="title">p</span>></span></code></div></div><div class="container"><div class="line"><code><span class="tag"></<span class="title">div</span>></span></code></div></div><div class="container"><div class="line"><code><span class="tag"><<span class="title">script</span>></span><span class="javascript">$(<span class="string">"body"</span>).click(<span class="keyword">function</span>(event) {</span></code></div></div><div class="container"><div class="line"><code> $(<span class="string">"#log"</span>).html(<span class="string">"clicked: "</span> + event.target.nodeName);</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>
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<div class="entry-example" id="example-1">
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<h4>Example: <span class="desc">实现一个简单的事件委托：给无序列表增加一个点击事件处理函数，然后它的子元素li的子元素都隐藏起来。当点击这个ul其中一个子元素li的时候，来回切换显示（参见 toggle()）li的子元素。</span>
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</h4>
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<div class="syntaxhighlighter xml ">
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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">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">ul</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">li</span>></span>item 1</code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">ul</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">li</span>></span>sub item 1-a<span class="tag"></<span class="title">li</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">li</span>></span>sub item 1-b<span class="tag"></<span class="title">li</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"></<span class="title">ul</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"></<span class="title">li</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">li</span>></span>item 2</code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">ul</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">li</span>></span>sub item 2-a<span class="tag"></<span class="title">li</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"><<span class="title">li</span>></span>sub item 2-b<span class="tag"></<span class="title">li</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"></<span class="title">ul</span>></span></code></div></div><div class="container"><div class="line"><code> <span class="tag"></<span class="title">li</span>></span></code></div></div><div class="container"><div class="line"><code><span class="tag"></<span class="title">ul</span>></span></code></div></div><div class="container"><div class="line"><code><span class="tag"><<span class="title">script</span>></span><span class="javascript"><span class="function"><span class="keyword">function</span> <span class="title">handler</span><span class="params">(event)</span> {</span></span></code></div></div><div class="container"><div class="line"><code> <span class="keyword">var</span> $target = $(event.target);</code></div></div><div class="container"><div class="line"><code> <span class="keyword">if</span>( $target.is(<span class="string">"li"</span>) ) {</code></div></div><div class="container"><div class="line"><code> $target.children().toggle();</code></div></div><div class="container"><div class="line"><code> }</code></div></div><div class="container"><div class="line"><code>}</code></div></div><div class="container"><div class="line"><code>$(<span class="string">"ul"</span>).click(handler).find(<span class="string">"ul"</span>).hide();<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> |