Enumerate answer choices on edx.org

edx-enumerate.js

// ==UserScript==
// @name         edx-enumerate
// @source       https://gist.github.com/mfellner/194b7d70b9d1a682cf37
// @downloadURL  https://gist.github.com/194b7d70b9d1a682cf37.git
// @version      0.1.0
// @description  Enumerate answer choices
// @author       mfellner
// @include      *://courses.edx.org/courses/*courseware*
// @run-at       document-idle
// @grant        none
// ==/UserScript==
/* jshint -W097 */
'use strict';

var $ = window.jQuery;

$(window).load(function() {
    $('form.choicegroup').each(function() {
        $.each($(this).find('label'), function(i, label) {
            $(label).prepend('<span style="font-weight: bold">' + i + '.</span>');
        });
    });
});