css选取器优先级秩序是什么？css基本选取器优先级的介绍
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">css的<span style="color: black;">选取</span>器有<span style="color: black;">非常多</span>种，<span style="color: black;">那样</span>，自然而然的就会有优先级这一概念<span style="color: black;">显现</span>，<span style="color: black;">因此</span>，css<span style="color: black;">选取</span>器优先级<span style="color: black;">次序</span>是<span style="color: black;">怎么样</span>的呢？本篇<span style="color: black;">文案</span>将来给<span style="color: black;">大众</span>介绍css<span style="color: black;">选取</span>器优先级的排序，话不多说，<span style="color: black;">咱们</span>来直接看正文内容。</p>
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<h2 style="color: black; text-align: left; margin-bottom: 10px;">在看css<span style="color: black;">选取</span>器优先级<span style="color: black;">次序</span>前，<span style="color: black;">咱们</span>先来简单说说css基本<span style="color: black;">选取</span>器有<span style="color: black;">那些</span>？</h2>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">1、标记<span style="color: black;">选取</span>器（如：body,div,p,ul,li）</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">2、id<span style="color: black;">选取</span>器（如：id="name",id="name_txt"）</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">3、类<span style="color: black;">选取</span>器（如：id="name",id="name_txt"）</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">4、后代<span style="color: black;">选取</span>器（如：#head .nav ul li 从父集到子孙集的<span style="color: black;">选取</span>器）</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">5、子元素<span style="color: black;">选取</span>器（如：div>p ,带大于号>）</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">6、伪类<span style="color: black;">选取</span>器（如：<span style="color: black;">便是</span>链接样式,a元素的伪类，4种<span style="color: black;">区别</span>的状态：link、visited、active、hover。）</p>看完了基本的css<span style="color: black;">选取</span>器类型后，<span style="color: black;">咱们</span>接着来看一下css优先级的概念。当两个规则都<span style="color: black;">功效</span>到了同一个html元素上时，<span style="color: black;">倘若</span>定义的属性有冲突，<span style="color: black;">那样</span>应该用谁的值的，用到谁的值谁的优先级就高。<h2 style="color: black; text-align: left; margin-bottom: 10px;"><span style="color: black;">咱们</span>来看一下css<span style="color: black;">选取</span>器优先级的算法：</h2>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">每一个</span>规则对应一个初始"四位数"：0、0、0、0</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">若是 行内<span style="color: black;">选取</span>符，则加1、0、0、0</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">若是 ID<span style="color: black;">选取</span>符，则加0、1、0、0</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">若是 类<span style="color: black;">选取</span>符/伪类<span style="color: black;">选取</span>符，则分别加0、0、1、0</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">若是 元素<span style="color: black;">选取</span>符，则分别加0、0、0、1</p>算法：将每条规则中，<span style="color: black;">选取</span>符对应的数相加后得到的”四位数“，从左到右进行比较，大的优先级越高。 <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">看完了<span style="color: black;">以上</span>内容，那<span style="color: black;">咱们</span>就来<span style="color: black;">瞧瞧</span>css<span style="color: black;">选取</span>器优先级的<span style="color: black;">详细</span>排序。</p>
<h2 style="color: black; text-align: left; margin-bottom: 10px;">css<span style="color: black;">选取</span>器优先级最高到最低<span style="color: black;">次序</span>为：</h2>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">1.id<span style="color: black;">选取</span>器（#myid）</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">2.类<span style="color: black;">选取</span>器（.myclassname）</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">3.标签<span style="color: black;">选取</span>器（div,h1,p）</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">4.子<span style="color: black;">选取</span>器（ul < li）</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">5.后代<span style="color: black;">选取</span>器（li a）</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">6.伪类<span style="color: black;">选取</span>（a:hover,li:nth-child）</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">最后，<span style="color: black;">必须</span><span style="color: black;">重视</span>的是： </p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">!important的优先级是最高的，但<span style="color: black;">显现</span>冲突时则需比较”四位数“;</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">优先级相<span style="color: black;">同期</span>，则采用就近原则，<span style="color: black;">选取</span>最后<span style="color: black;">显现</span>的样式;</p>继承得来的属性，其优先级最低。<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">以上<span style="color: black;">便是</span>本篇<span style="color: black;">文案</span>的<span style="color: black;">所有</span>内容，关于css<span style="color: black;">选取</span>器当然不止<span style="color: black;">以上</span>的六个<span style="color: black;">选取</span>器，<span style="color: black;">更加多</span>css<span style="color: black;">选取</span>器的内容<span style="color: black;">能够</span>参考<a style="color: black;">css<span style="color: black;">运用</span>手册</a>。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">以上<span style="color: black;">便是</span>css<span style="color: black;">选取</span>器优先级<span style="color: black;">次序</span>是什么？css基本<span style="color: black;">选取</span>器优先级的介绍的<span style="color: black;">仔细</span>内容，<span style="color: black;">更加多</span>请关注我！！！！</p>
你的见解真是独到，让我受益良多。 我完全同意你的看法，期待我们能深入探讨这个问题。 楼主继续加油啊！外链论坛加油！
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