JSFiddle - React, Tailwind, and code Playground

JavaScript

$.urlParam = function(url,name){
    var results = new RegExp('[\?&]' + name + '=([^&#]*)').exec(url);
    if (results==null){
       return null;
    }
    else{
       return results[1] || 0;
    }
}

var x='http://localhost:13562/Student/RefreshStudents?sort=FirstName&sortdir=ASC&page=1'

alert($.urlParam(x,'sort'));
alert($.urlParam(x,'sortdir'));
alert($.urlParam(x,'page'));