js 获得url参数

  var get_urlparm={
      int:function(parm_url){
          if(parm_url){
              this.url=parm_url
          }
          else{
              this.url=window.location.href
          }
          this.get_obj()
      },
      get_obj:function(){
          var url=this.url
          var paraString =url.substring(url.indexOf("?") + 1, url.length).split("&");
          var paraObj = {}
          for (var i = 0; i < paraString.length; i++) {
              var j = paraString[i]
              paraObj[j.substring(0, j.indexOf("="))] = j.substring(j.indexOf("=") + 1, j.length);
          }
          console.log(JSON.stringify(paraObj))
      }
  }