define([], function () { function loadImage(elem, url) { if (elem.tagName !== "IMG") { return new Promise(function (resolve, reject) { var tmp = new Image(); tmp.onload = function () { elem.style.backgroundImage = "url('" + url + "')"; resolve(elem); }; tmp.src = url; }); } else { elem.setAttribute("src", url); return Promise.resolve(elem); } } return { loadImage: loadImage }; });