getUrlParameter.js

/**
 * Returns value of specified URL parameter.
 * @param  {String} name Query parameter to return value of.
 * @return {String}      String of query parameter or null / 0.
 */
getUrlParameter = function(name){
    var results = new RegExp('[\\?&]' + name + '=([^&#?]*)').exec(window.location.href);
    if (results==null){ return undefined; }
    else { return results[1] || 0; }
}