正则分割字符串、页面状态、渲染模式

//正则分割字符串

 1 var ids=document.getElementsByClassName("div2");
 2 var cls=ids[0].className.split(/\s+/);
 3 alert(cls.length);
 4 for (var i = 0; i <cls.length; i++) {
 5 if(cls[i] == "divs"){
 6 alert(i+" "+cls[i]);
 7 }else if(cls[i] == "div2"){
 8 alert(i+" "+cls[i]);
 9 }else{
10 alert(i+" "+cls[i]);
11 }
12 }

 1 ~~~~~~~~~~~神奇的分割线~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 2
 3 // 检测页面处于加载还是完成状态，有2个值 onload和conmplete
 4 if(document.readyState=="onload"){
 5 alert("onload");
 6 }else{
 7 alert("ready");
 8 }
 9
10 ~~~~~~~~~~~神奇的分割线~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
11
12 // 检测页面采用标准模式(CSS1Compat)渲染还是兼容模式(BackCompat)渲染
13 if(document.compatMode == "CSS1Compat"){
14 alert("CSS1Compat");
15 }else if(document.compatMode == "BackCompat"){
16 alert("BackCompat");
17 }else{
18 alert(" ");
19 }

原文地址：https://www.cnblogs.com/mhxy13867806343/p/8447150.html