js跨站请求功能完善

getscript:function (url) {
            url += '&t=' + (new Date).getTime();
            var s, c,  d = document, src = (url.indexOf("?") == "-1" ? url + "?" : url);
            (s = d.createElement("script")).setAttribute("type", "text/javascript");
            s.setAttribute("charset", "UTF-8");
            d.getElementsByTagName("head")[0].appendChild(s).src = src;
            s.onload = s.onreadystatechange = function(){ s.readyState ? s.readyState.toLowerCase() == 'loaded'  : '' };
        },

 verifymobile:function(){
            var sendcapture = $("#sendcapture").val();
            createOrder.getscript('http://passport.xxx.com/mobile/reg?mobile='+mobile+'&captcha='+sendcapture+'&callback=verifymobileCallback');

        },