Get variable from URL param

gup.js

// For url with ?search=param
// http://stackoverflow.com/a/979997/168738

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

var param = gurlp('search', window.location.href);