获取url参数

var queryString = window.location.search;
var params = new URLSearchParams(queryString);
var paramValue = params.get('111'); // 替换 'paramName' 为你要获取的参数名

var userId = GetQueryString("userId");

//获取传递参数
function GetQueryString(name) {
    var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)");
    var r = window.location.search.substr(1).match(reg);
    if (r != null)
        return decodeURI(r[2]);
    return null;
}