js方法获取URL中参数

 

 

 GetQueryString(name){
        var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)");
//        console.log(window.location);
        var r = window.location.search.substr(1).match(reg);
//        console.log(r);
        if (r != null)return unescape(r[2]);
        return null;
      }