1 <!DOCTYPE HTML>
2 <html>
3 <head>
4 <title>js获取url后面的参数</title>
5 <meta charset="utf-8" />
6 <script>
7 var params=(function(){
8 var search=location.search; //获取location的search属性，保存在search中
9 var params={}; //创建空对象params
10 if(search!=""){ //如果search不是空字符串
11 search.slice(1).split("&").forEach( //?username=zhangdong&pwd=123456;//search去开头?，按&切割为数组，forEach
12 function(val){
13 var arr=val.split("="); //将当前元素值按=切割，保存在arr中
14 params[arr[0]]=arr[1]; //向params中添加一个元素,属性名为arr[0],值为arr[1]
15
16 }
17 );
18 }
19 return params; //返回param
20 })();
21 console.dir(params); //params:{username:"katherine",pwd:"123456"}
22 </script>
23 </head>
24 <body>
25 <form>
26 姓名:<input name="username"/>
27 密码:<input type="password" name="pwd"/>
28 </form>
29 </body>
30 </html>
