function back(response) {
            console.log(response);
        }
        var script = document.createElement("script");
        script.src = "http://dsapi.beibei.com/ads/h5.html?ad_id=h5_beibei_579s/?callback=back";
        document.body.insertBefore(script,document.body.firstChild);

瀏覽器報錯
Uncaught SyntaxError: Unexpected token :

但是如果我請求的不是一個帶有查詢參數(shù)的url,如

function back(response) {
            console.log(response);
        }
        var script = document.createElement("script");
        script.src = "http://freegeoip.net/json/?callback=back";
        document.body.insertBefore(script,document.body.firstChild);

則不會出錯。