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181 lines
11 KiB
HTML
181 lines
11 KiB
HTML
<article class="" id="post-">
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<header class="entry-header">
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<h1 class="entry-title">.click()</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/mouse-events/">鼠标事件</a></span>
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<span class="pull-right">英文文档：<a href="https://api.jquery123.com/click/" target="_blank">.click()</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="click1"><h2 class="section-title">
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<span class="name">.click( handler(eventObject) )</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 JavaScript 的"click" 事件绑定一个处理器，或者触发元素上的 "click" 事件。</p>
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<ul class="signatures">
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<li class="signature" id="click-handlereventObject">
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<h4 class="name">
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<span class="version-details">添加的版本: <a href="/category/version/1.0/">1.0</a></span>.click( handler(eventObject) )</h4>
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<ul><li>
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<div><strong>handler(eventObject)</strong></div>
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<div>类型: <a href="/Types/#Function">Function</a>()</div>
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<div>每次事件触发时会执行的函数。</div>
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</li></ul>
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</li>
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<li class="signature" id="click-eventData-handlereventObject">
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<h4 class="name">
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<span class="version-details">添加的版本: <a href="/category/version/1.4.3/">1.4.3</a></span>.click( [eventData ], handler(eventObject) )</h4>
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<ul>
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<li>
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<div><strong>eventData</strong></div>
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<div>类型: <a href="/Types/#Object">Object</a>
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</div>
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<div>一个对象，它包含的数据键值对映射将被传递给事件处理程序。</div>
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</li>
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<li>
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<div><strong>handler(eventObject)</strong></div>
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<div>类型: <a href="/Types/#Function">Function</a>()</div>
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<div>每次事件触发时会执行的函数。</div>
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</li>
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</ul>
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</li>
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<li class="signature" id="click">
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<h4 class="name">
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<span class="version-details">添加的版本: <a href="/category/version/1.0/">1.0</a></span>.click()</h4>
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<ul><li><div class="null-signature">这个方法不接受任何参数</div></li></ul>
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</li>
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</ul>
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<div class="longdesc" id="entry-longdesc">
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<p>这个函数的前两个用法是 <code>.on('click', handler)</code> 的快捷方式，第三个用法是<code>.trigger( "click" )</code>的快捷方式。一个元素被点击和鼠标按键被按下和释放时候将触发 <code>click</code> 事件。任何HTML元素都可以接收此事件。举例来说，请看下面的HTML：</p>
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<div class="syntaxhighlighter javascript nogutter">
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<table>
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<tbody>
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<tr>
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<td class="gutter">
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<div class="line n1">1</div>
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<div class="line n2">2</div>
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<div class="line n3">3</div>
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<div class="line n4">4</div>
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<div class="line n5">5</div>
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<div class="line n6">6</div>
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<div class="line n7">7</div>
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</td>
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<td class="code">
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<pre><div class="container"><div class="line"><code>For example, consider the HTML:</code></div></div><div class="container"><div class="line"><code><span class="xml"><span class="tag"><<span class="title">div</span> <span class="attribute">id</span>=<span class="value">"target"</span>></span></span></code></div></div><div class="container"><div class="line"><code> Click here</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">div</span> <span class="attribute">id</span>=<span class="value">"other"</span>></span></code></div></div><div class="container"><div class="line"><code> Trigger the handler</code></div></div><div class="container"><div class="line"><code><span class="tag"></<span class="title">div</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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<p class="image">
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<img alt="" src="/resources/0042_05_03.png"/>
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</p>
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<p>这个事件处理器可以绑定到任何 <code><div></code>:</p>
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<div class="syntaxhighlighter javascript nogutter">
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<table>
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<tbody>
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<tr>
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<td class="gutter">
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<div class="line n1">1</div>
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<div class="line n2">2</div>
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<div class="line n3">3</div>
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</td>
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<td class="code">
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<pre><div class="container"><div class="line"><code>$(<span class="string">"#target"</span>).click(<span class="keyword">function</span>() {</code></div></div><div class="container"><div class="line"><code> alert(<span class="string">"Handler for .click() called."</span>);</code></div></div><div class="container"><div class="line"><code>});</code></div></div></pre>
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</td>
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</tr>
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</tbody>
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</table>
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</div>
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<p>现在，如果我们点击这个元素，警报提示框显示：</p>
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<p>
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<span class="output">Handler for .click() called.</span>
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</p>
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<p>
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我们也可以通过点击不同的元素时手动触发这个事件：</p>
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<div class="syntaxhighlighter javascript nogutter">
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<table>
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<tbody>
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<tr>
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<td class="gutter">
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<div class="line n1">1</div>
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<div class="line n2">2</div>
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<div class="line n3">3</div>
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</td>
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<td class="code">
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<pre><div class="container"><div class="line"><code>$(<span class="string">"#other"</span>).click(<span class="keyword">function</span>() {</code></div></div><div class="container"><div class="line"><code> $(<span class="string">"#target"</span>).click();</code></div></div><div class="container"><div class="line"><code>});</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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<p>这些代码执行后，点击<span class="output">Trigger the handler</span>同样警报提示框显示。</p>
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<p><code>click</code>事件触发需要以下几点：</p>
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<ul>
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<li>鼠标指针在元素里面时点击。</li>
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<li>鼠标指针在元素里面时释放。</li>
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</ul>
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<p>这通常要求的顺序,然后才采取行动。如果这些不被满足，<code>mousedown</code> 或 <code>mouseup</code>事件可能更加合适。</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">点击段落时隐藏他们：</span>
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</h4>
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<div class="syntaxhighlighter xml ">
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<table>
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<td class="gutter">
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<div class="line n1">1</div>
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<div class="line n22">22</div>
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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">p</span> <span class="rules">{ <span class="rule"><span class="attribute">color</span>:<span class="value">red;</span></span> <span class="rule"><span class="attribute">margin</span>:<span class="value"><span class="number">5</span>px;</span></span> <span class="rule"><span class="attribute">cursor</span>:<span class="value">pointer;</span></span> <span class="rule">}</span></span></code></div></div><div class="container"><div class="line"><code> <span class="tag">p</span><span class="pseudo">:hover</span> <span class="rules">{ <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"></<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> <span class="tag"><<span class="title">p</span>></span>First Paragraph<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">p</span>></span>Second Paragraph<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">p</span>></span>Yet one more Paragraph<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">script</span>></span><span class="javascript"></span></code></div></div><div class="container"><div class="line"><code> $(<span class="string">"p"</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">this</span>).slideUp();</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>
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<div class="entry-example" id="example-1">
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<h4>Example: <span class="desc">在页面上所有段落上触发click事件。</span>
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</h4>
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<div class="syntaxhighlighter javascript ">
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<table>
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<tbody>
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<tr>
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<td class="gutter">
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<div class="line n1">1</div>
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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="string">"p"</span>).click();</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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</div></section>
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</div></article> </div>
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</article> |