JS获得URL超链接的参数值实例代码

var url = location.href; 
//获取keyword的参数值 
var es=/keyword=/; 
es.exec(url); 
var result=RegExp.rightContext;

例如：

var url = location.href; 
//获取pid的参数值 
var es=/pid=/; 
es.exec(url); 
var pid=RegExp.rightContext; var aurl = "&pid="+pid;

alert(pid);//结果：&pid=37