JQuery不会得到json？ [英] JQuery won't get json?

问题描述

所以我正在尝试完成从谷歌获取json数据的简单任务，但是这一点jquery代码将无法运行。你能帮我找出原因吗？

So I'm trying to complete the simple task of getting json data from google, but this little bit of jquery code won't run. Will you please help me figure out why?

  <script src="http://code.jquery.com/jquery-latest.js"></script>

  <script>
  $(document).ready(function(){
    $.getJSON("http://maps.googleapis.com/maps/api/geocode/json?address=1600+Amphitheatre+Parkway,+Mountain+View,+CA&sensor=false", function(jsondata) {
            alert(jsondata.status);
    });
  });
  </script>

最佳解决方案：添加& callback =？到网址的末尾。非常感谢你所有的帮助！

Best solution: add "&callback=?" to the end of the url. Thank you so much for all your help guys!

推荐答案

它被称为同源政策。简而言之：您的代码所在的域是您的javascript可以与之通信的唯一域（默认情况下）

Its called the Same Origin Policy. In short: the domain that your code is on, is the only domain your javascript can communicate with (by default)

您收到如下错误：

XMLHttpRequest cannot load http://maps.googleapis.com/maps/api/geocode/json?address=1600+Amphitheatre+Parkway,+Mountain+View,+CA&sensor=false. Origin http://fiddle.jshell.net is not allowed by Access-Control-Allow-Origin.

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