JSFiddle - React, Tailwind, and code Playground

by Ralt

JavaScript

function getParameterByName( name, str )
{
    name = name.replace(/[\[]/, "\\\[").replace(/[\]]/, "\\\]");
    var regexS = "[\\?&]" + name + "=([^&#]*)";
    var regex = new RegExp(regexS);
    var results = regex.exec( str );
    if(results == null)
        return "";
    else
      return decodeURIComponent(results[1].replace(/\+/g, " "));
}

var string = 'playgame.aspx?gid=4&tag=6c81748b9239e96e';

var str = getParameterByName( 'tag', string );

alert(str);