封裝GetQueryString()方法來獲取URL的value值

js封裝GetQueryString()方法來獲取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;
}