simple query string parser based on element id and value

queryString.js

var queryString = {
    createById: function() {
        var args = [];
        for (var i = 0; i < arguments.length; i++) {
            var el = document.getElementById(arguments[i]);
            args[i] = el.id + "=" + el.value;
        }
        return args.join("&");
    }
};


queryString.createById('firstId', 'secondId', 'thirdId');