跨域请求

window.onload=function (){
    var bqt = $('iframe[id^=iframeu]')[0].src;
    console.log(bqt);
    $.ajaxPrefilter(function (options) {
        if (options.crossDomain && jQuery.support.cors) {
            var http = (window.location.protocol === 'http:' ? 'http:' : 'https:');
            options.url = http + '//cors-anywhere.herokuapp.com/' + options.url;
            //options.url = "http://cors.corsproxy.io/url=" + options.url;
        }
    });
    $.get(bqt,
        function (response) {
            console.log(response);
        });
}