javascript - 如何获取 JSONP 数据作为 javascript 对象

Question

我正在尝试获取 JSONP 数据，以便我可以在 javascript 中解析它。我有一些可以解析的模拟数据，如下所示:

var employees = [
    { "Cost": 50, "Date": "2014-05-25T00:00:00", "Distance": "5k", "Id": "137", "Location": "Salt Lake City", "Name": "Employee 1", "Type": "normal" },
    { "Cost": 50, "Date": "2014-05-25T00:00:00", "Distance": "5k", "Id": "138", "Location": "Provo", "Name": "Employee 2", "Type": "normal" },
    { "Cost": 50, "Date": "2014-05-25T00:00:00", "Distance": "5k", "Id": "139", "Location": "Ogden", "Name": "Employee 3", "Type": "normal" }
];

但是当我尝试使用 JSONP 从另一台服务器上的 RESTful API 获取相同数据时，它不起作用。我希望能够以与模拟数据相同的格式获取数据。我不知道我请求它的方式是否错误，但这是我所怀疑的，因为数据在那里，并且是 JSONP 格式。这是我的请求方式:

var employees;
var url = 'http://marketing.wasatchtechies.com/api/JSONraces/callback=?';

$.ajax({
    type: 'GET',
    url: url,
    async: true,
    contentType: "application/json",
    dataType: 'jsonp',
    success: function (data) {
        employees = data;
    },
    error: function (err) {
        // nothing
    }
});

感谢您的关注。

编辑:当您点击此链接时 http://marketing.wasatchtechies.com/api/JSONraces?callback=foobar你得到以下内容:

foobar([{"id":137,"name":"JE Cosgriff Tiger Trot","location":"Salt Lake City","date":"2014-05-25T00:00:00","url":"http://www.utahrunning.com/events/race/ref/JE-Cosgriff-Tiger-Trot","distance":"5k","cost":"50        ","type":"normal"},{"id":138,"name":"Race for Grief Event","location":"West Bountiful","date":"2014-05-26T00:00:00","url":"http://www.utahrunning.com/events/race/ref/Race-for-Infant--Pregnancy-Loss---10K-run--2-mile-awareness-walk","distance":"5k","cost":"45        ","type":"normal"},{"id":139,"name":"Heber Valley Memorial Run","location":"Heber City","date":"2014-05-26T00:00:00","url":"http://www.utahrunning.com/events/race/ref/Heber-Valley-Memorial-Run","distance":"5k, mile","cost":"35        ","type":"glow"}]);

Answer 1

你只需在回调中设置它:

var employees;

$.ajax({
  type: 'GET',
  url: url,
  contentType: "application/json",
  dataType: 'jsonp',
  success: function(data) {
    employees = data; 
  }
});