js外引文件添加随机字符串后缀

        var jsArr = ['js/test.js','js/test1.js'];

        createJs(jsArr);

        function createJs(link) {

            var len = link.length ,n=0;

            start();

            function start() {
                var newJs = document.createElement('script')
                    , dataT = new Date().getTime()
                ;
                newJs.src = link[n] + '?t='+dataT;
                document.body.appendChild(newJs);

                newJs.onload = function () {
                    n++;
                    if(n<len){
                        start();
                    }
                }
            }

        }