js获取url参数

 

 

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


            var intersectionID = getQueryString("intersectionID");