script跨域获取iframe使用swiper实现轮播‘

function loadScript() {
    var scriptTag = document.createElement("script");
    scriptTag.src = "https://vipcdn.mgtv.com/upload5/file/container_url.js";
    document.body.appendChild(scriptTag);
    scriptTag.onload = function () {
        // console.log(window.__URL__);
        for (let i = 0; i < window.__URL__.length; i++) {
            var oI = document.getElementsByTagName("iframe");
            oI[i].src = window.__URL__[i].url;
            // console.log("111");
        }
    };
}