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

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<h1 class="entry-title">jQuery.fx.interval</h1>
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所属分类:<span class="category"><a href="/category/effects/">特效</a> &gt; <a href="/category/effects/custom-effects/">自定义</a></span><span class="category-divider"> | </span><span class="category"><a href="/category/properties/">内部属性</a> &gt; <a href="/category/properties/global-jquery-object-properties/">全局 jQuery 对象的属性</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/jQuery.fx.interval/" target="_blank">jQuery.fx.interval</a></span>
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<article class="entry property" id="jQuery-fx-interval1"><h2 class="section-title">
<span>jQuery.fx.interval</span><span class="returns">返回: <a href="/Types/#Number">Number</a></span>
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<p class="desc"><strong>描述: </strong>该动画的频率(以毫秒为单位)。</p>
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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>jQuery.fx.interval</h4></li></ul>
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<p>这个属性可以设置动画每秒运行帧数。默认是13毫秒。该属性值越小在速度较快的浏览器中例如Chrome动画执行的越流畅但是会影响程序的性能并且占用更多的 CPU 资源。</p>
<p>由于jQuery中该属性是全局性的因此在没有动画正在运行或停止所有动画时此属性的变化才能生效。</p>
<p><del><strong>注意:</strong><code>jQuery.fx.interval</code>当前在支持<code>requestAnimationFrame</code>属性的浏览器中没有效果如谷歌Chrome浏览器11。此问题会在今后发布的版本中得以解决。</del></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><span class="desc">让所有动画以更少的帧数执行。</span></h4>
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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">div</span> <span class="rules">{ <span class="rule"><span class="attribute">width</span>:<span class="value"><span class="number">50</span>px;</span></span> <span class="rule"><span class="attribute">height</span>:<span class="value"><span class="number">30</span>px;</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">float</span>:<span class="value">left;</span></span></span></code></div></div><div class="container"><div class="line"><code> <span class="rule"><span class="attribute">background</span>:<span class="value">green;</span></span> <span class="rule">}</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">p</span>&gt;</span><span class="tag">&lt;<span class="title">input</span> <span class="attribute">type</span>=<span class="value">"button"</span> <span class="attribute">value</span>=<span class="value">"Run"</span>/&gt;</span><span class="tag">&lt;/<span class="title">p</span>&gt;</span></code></div></div><div class="container"><div class="line"><code><span class="tag">&lt;<span class="title">div</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>jQuery.fx.interval = <span class="number">100</span>;</code></div></div><div class="container"><div class="line"><code> </code></div></div><div class="container"><div class="line"><code>$(<span class="string">"input"</span>).click(<span class="keyword">function</span>(){</code></div></div><div class="container"><div class="line"><code> $(<span class="string">"div"</span>).toggle( <span class="number">3000</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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