getJSON 的数据结果未定义 [重复]

Question

        function getval(data) {
        alert(data['url']);
    }



    $(document).ready(function () {
        var bingAPIUrl = "http://www.bing.com/HPImageArchive.aspx?format=js&idx=0&n=1&mkt=en-US&callback=getval";
        $.support.cors = true;
        var result = $.getJSON(bingAPIUrl, getval(data));

    });

我正在尝试从 bing 获取图像 url 的 url 属性，有人可以帮助我为什么在我的回调函数“getval”中未定义数据结果

Answer 1

getVal = function (data) {
    alert(data.query.results.json.images.url);
};
$.getJSON("https://query.yahooapis.com/v1/public/yql?q=select%20*%20from%20json%20where%20url%3D%22http%3A%2F%2Fwww.bing.com%2FHPImageArchive.aspx%3Fformat%3Djs%26idx%3D0%26n%3D1%26mkt%3Den-US%22&format=json&callback=", function(data) {
  getVal(data)
});