js封装GetQueryString()方法来获取URL的value值
function getQueryString(name){
let reg = new RegExp("(^|&)"+ name +"=([^&]*)(&|$)");
let r = window.location.search.substr(1).match(reg);
if(r!=null)return unescape(r[2]); return null;
}
function getQueryString(name){
let reg = new RegExp("(^|&)"+ name +"=([^&]*)(&|$)");
let r = window.location.search.substr(1).match(reg);
if(r!=null)return unescape(r[2]); return null;
}