uTools-Manuals/docs/jQuery/event.which.html
2019-04-21 11:50:48 +08:00

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<h1 class="entry-title">event.which</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-object/">事件对象</a></span>
<span class="pull-right">英文文档:<a href="https://api.jquery123.com/event.which/" target="_blank">event.which</a></span>
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<article class="entry property" id="event-which1"><h2 class="section-title">
<span>event.which</span><span class="returns">返回: <a href="/Types/#Number">Number</a></span>
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<p class="desc"><strong>描述: </strong>针对键盘和鼠标事件,这个属性能确定你到底按的是哪个键。 </p>
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<span class="version-details">添加的版本: <a href="/category/version/1.1.3/">1.1.3</a></span>event.which</h4></li></ul>
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<p><code>event.which</code><code>event.keyCode</code><code>event.charCode</code> 标准化了。推荐用 <code>event.which</code> 来监视键盘输入。更多细节请参阅: <a href="https://developer.mozilla.org/en/DOM/event.charCode#Notes">event.charCode on the MDC</a>. </p>
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<code>event.which</code>也将正常化的按钮按下(<code>mousedown</code><code>mouseup</code>events),左键报告<code>1</code>,中间键报告<code>2</code>,右键报告<code>3</code>。使用<code>event.which</code>代替<code>event.button</code></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">记录按键</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">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> </code></div></div><div class="container"><div class="line"><code><span class="tag">&lt;<span class="title">input</span> <span class="attribute">id</span>=<span class="value">"whichkey"</span> <span class="attribute">value</span>=<span class="value">"type something"</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><span class="tag">&lt;<span class="title">script</span>&gt;</span><span class="javascript">$(<span class="string">'#whichkey'</span>).bind(<span class="string">'keydown'</span>,<span class="keyword">function</span>(e){</span></code></div></div><div class="container"><div class="line"><code> $(<span class="string">'#log'</span>).html(e.type + <span class="string">': '</span> + e.which );</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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<h4>Example: <span class="desc">Log which mouse button was depressed.</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">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> </code></div></div><div class="container"><div class="line"><code><span class="tag">&lt;<span class="title">input</span> <span class="attribute">id</span>=<span class="value">"whichkey"</span> <span class="attribute">value</span>=<span class="value">"type something"</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><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="string">'#whichkey'</span>).bind(<span class="string">'mousedown'</span>,<span class="keyword">function</span>(e){</code></div></div><div class="container"><div class="line"><code> $(<span class="string">'#log'</span>).html(e.type + <span class="string">': '</span> + e.which );</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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