js獲取url參數

function GetQueryString(name) { var reg = new RegExp("(^|&)"+ name +"=([^&]*)(&|$)"); var url =decodeURI(decodeURI(window.location.search)); var r = url.substr(1).match(reg);//search,查詢？後面的參數，並匹配正則 if(r!=null)return unescape(r[2]); return null; }