获取地址栏参数

function GetQueryString(name) {
const reg = new RegExp(`(^|&)${name}=([^&]*)(&|$)`, 'i');
const i = window.location.href.indexOf('?');
const r = window.location.href.substr(i).substr(1).match(reg);
if (r != null) return unescape(r[2]); return null;
}

调用 GetQueryString(id)