重绘和重排和回流（重绘和回流是什么,如何避免）

科技前沿 • 2025-05-06 08:58 • 阅读 48
大家好，我是讯享网，很高兴认识大家。
&lt;!DOCTYPE html&gt;
&lt;html&gt;
&lt;head&gt;
&lt;title&gt;&lt;/title&gt;
&lt;script src=https://blog.51cto.com/u_10585798/“http://libs.baidu.com/jquery/2.0.0/jquery.min.js”&gt;&lt;/script&gt; &lt;style type=“text/css”&gt; .has-transition { 讯享网</span>-webkit-transition: margin-left 1s ease-<span>out</span><span>; </span>-moz-transition: margin-left 1s ease-<span>out</span><span>; </span>-o-transition: margin-left 1s ease-<span>out</span><span>; transition: margin</span>-left 1s ease-<span>out</span><span>; 
 } li { background: #ccc; border: 1px #</span><span>000</span><span> solid; display: block; padding: 2px; margin</span>-left: <span>0</span><span>; margin</span>-<span>top: 4px; margin</span>-<span>bottom: 4px; 
 } &lt;/style&gt; &lt;/head&gt; &lt;body&gt; &lt;p&gt;第一种情况)&lt;/p&gt; &lt;ul class=“example-1”&gt; 讯享网&lt;li <span>class</span>=<span>"</span><span>has-transition</span><span>"</span>&gt;<span>1</span>&lt;/li&gt; &lt;li <span>class</span>=<span>"</span><span>has-transition</span><span>"</span>&gt;<span>2</span>&lt;/li&gt; &lt;li <span>class</span>=<span>"</span><span>has-transition</span><span>"</span>&gt;<span>3</span>&lt;/li&gt; &lt;li <span>class</span>=<span>"</span><span>has-transition</span><span>"</span>&gt;<span>4</span>&lt;/li&gt; &lt;li <span>class</span>=<span>"</span><span>has-transition</span><span>"</span>&gt;<span>5</span>&lt;/li&gt; 
 &lt;/ul&gt; &lt;p&gt;第二种情况)&lt;/p&gt; &lt;ul class=“example-2”&gt;
讯享网 &lt;li <span>class</span>=<span>"</span><span>has-transition</span><span>"</span>&gt;<span>1</span>&lt;/li&gt; &lt;li <span>class</span>=<span>"</span><span>has-transition</span><span>"</span>&gt;<span>2</span>&lt;/li&gt; &lt;li <span>class</span>=<span>"</span><span>has-transition</span><span>"</span>&gt;<span>3</span>&lt;/li&gt; &lt;li <span>class</span>=<span>"</span><span>has-transition</span><span>"</span>&gt;<span>4</span>&lt;/li&gt; &lt;li <span>class</span>=<span>"</span><span>has-transition</span><span>"</span>&gt;<span>5</span>&lt;/li&gt; 
 &lt;/ul&gt; &lt;script type=“text/javascript”&gt; $(‘.example-1 li’).click(function () { 讯享网$(</span><span>this</span>).removeClass(<span>'</span><span>has-transition</span><span>'</span><span>); $(</span><span>this</span>).css(<span>'</span><span>margin-left</span><span>'</span>, <span>100</span><span>); $(</span><span>this</span>).addClass(<span>'</span><span>has-transition</span><span>'</span><span>); $(</span><span>this</span>).css(<span>'</span><span>margin-left</span><span>'</span>, <span>50</span><span>); 
 }); $(‘.example-2 li’).click(function () { $(</span><span>this</span>).removeClass(<span>'</span><span>has-transition</span><span>'</span><span>); $(</span><span>this</span>).css(<span>'</span><span>margin-left</span><span>'</span>, <span>100</span><span>); $(</span><span>this</span>)[<span>0</span>].offsetHeight; <span>//</span><span> 强制执行重排，确保设置的100px能够生效</span> $(<span>this</span>).addClass(<span>'</span><span>has-transition</span><span>'</span><span>); $(</span><span>this</span>).css(<span>'</span><span>margin-left</span><span>'</span>, <span>50</span><span>); 
 }); &lt;/script&gt; &lt;/body&gt; &lt;/html&gt;
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重绘和重排和回流（重绘和回流是什么,如何避免）

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