<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title></title> <script type="text/javascript"> function getDom01(){ var div = document.querySelector(".box"); /…
问题:IE8/9不支持Array.indexOf 解决方案 if (!Array.prototype.indexOf) { Array.prototype.indexOf = function(elt /*, from*/) { var len = this.length >>> 0; var from = Number(arguments[1]) || 0; from = (from < 0) ? Math.ceil(from) : Math.floor(from); if (f…