game.getScript = (function() {
var cache = {};//The url is cached internally and not requested next time
return function(url, fn) {
if ("string" === typeof(url)) {
url = [url]; //If it's not an array with a sleeve
};
var i = 0,//Cycle up
ok = 0,//Load several js successfully
len = url.length,//How many js
head = document.getElementsByTagName("head")[0],
js, _url,
create = function(url) {//Create a js
js = document.createElement("script");
js.type = "text/javascript";
js.src = url;
head.appendChild(js);
return js;
};
for (; i < len;) {
if (cache[encodeURIComponent((_url = url[i++]))]) {//If it's loaded
(++ok >= len && fn) && fn();//If all js is loaded, a callback is executed
continue;
}
cache[encodeURIComponent(_url)] = !0;//Set the cache
js = create(_url);//Create a js
fn && (js.onload = function() {
if (++ok >= len) {//If all js is loaded, a callback is executed
fn();
}
});
};
head = js = _url = create = null;
return this;
}
})();