javascript - 如何在Jquery ajax中读取名称和值对中的JSONP响应数据？

Question

我正在尝试使用 JSONP 技术从其他域读取 JSON 文件

这是 JSON

callback({
  "response":{"docs":[
      {
        "FirstName":"qwe",
        "LastName":"asd",
        "Age":"30"},
      {
        "FirstName":"zxc",
        "LastName":"bnm",
        "Age":"40"},

        .
        .
        .
      {
        "FirstName":"poi",
        "LastName":"lkj",
        "Age":"20"},
      ]},
})

这是 Jquery 代码

$.ajax({
                    type: "GET",
                    url: "http://qqq.com/",
                    crossDomain: true,
                    jsonpCallback: 'callback',
                    contentType: "application/json; charset=utf-8",
                    dataType: "jsonp",
                    success: function (msg) {
                         $.each(msg.response.docs, function (key, value){
                              alert(key +"is"+value);
                    }
         });

从上面的代码中我期望得到警报输出

FirstName is qwe
LastName is asd 
and so on

但是我收到的警报是

0 is [object Object]
1 is [object Object]
and so on

我可以知道我需要做什么才能达到我的期望吗

FirstName is qwe
LastName is asd 

提前致谢

Answer 1

您的 $each 函数正在迭代 docs 数组。传递给它的参数将是:

• key:文档对象的索引
• val:文档对象本身

相反，您可能还想使用另一个循环迭代每个(键，值)对:

success: function (msg) {
  $.each(msg.response.docs, function (index, doc){
      $.each(doc, function (key, val) {
        console.log(key + 'is' + val);
      });
  }
}