JSFiddle - React, Tailwind, and code Playground

JavaScript

alert(getQueryString("p2"));
    
    function getQueryString (Param) {
          return decodeURI("http://www.example.com/?p1=p11&p2=p2222".replace(new RegExp("^(?:.*[&?]" + encodeURI(Param).replace(/[.+*]/g, "$&") + "(?:=([^&]*))?)?.*$", "i"), "$1"));
        }