js obtaining the parameter values url html

function getUrlParameter(name){
        name = name.replace(/[]/,"\[").replace(/[]/,"\[").replace(/[]/,"\\\]");
        var regexS = "[\\?&]"+name+"=([^&#]*)";
        var regex = new RegExp( regexS );
        var results = regex.exec(window.parent.location.href );
        if( results == null ) return ""; else {
            return results[1];
        }
    };

http://localhost:8080/pcms/moduleApp/indexControl.html?conferId=117

var conferid =getUrlParameter('conferId');