获取类名

来源:互联网 发布:淘宝评分影响 编辑:程序博客网 时间:2024/05/01 00:41
<span style="font-size:14px;"><!DOCTYPE html><html><head><meta charset="UTF-8"><title>类名(面试题)</title></head><body><ul id="ul"><li>1</li><li class="box">2</li><li class="box">3</li><li class="box">4</li></ul><ul id="aa"><li>1</li><li class="box">2</li><li class="box">3</li><li class="box">4</li></ul></body><script type="text/javascript">// var all = document.getElementsByClassName("box");var ul = document.getElementById("ul");function getClass(element,eleClassName){var ele = element.getElementsByTagName("*");var result = [];for (var i = 0; i < ele.length; i++) {if (ele[i].className == eleClassName) {// ele[i].style.background = "red";result.push(ele[i]);}}return result;} var b = getClass(ul,"box");for (var i = 0; i < b.length; i++) {b[i].style.background = "red";}</script></html></span>

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