Javascript 如何在 jQuery Ajax 成功回调中处理我的 JSON 数据？
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How to handle my JSON data in jQuery Ajax success callback?
提问by Mellon
If I have a ajax call:
如果我有一个ajax调用：
$.ajax({
url: url,
dataType: 'json',
data: data,
success: function(json_data){
//What's the efficient way to extract the JSON data and get the value
}
});
Server returned to my js the following JSONdata
服务器向我的 js 返回了以下JSON数据
{"contact":[{"address":[{"city":"Shanghai","street":"Long
Hua Street"},{"city":"Shanghai","street":"Dong Quan
Street"}],"id":"huangyim","name":"Huang Yi Ming"}]}
In my jQuery AJAX success callback function, how to extract the value of "name", value of "address" (which is a list of object) elegantly?
在我的 jQuery AJAX 成功回调函数中，如何优雅地提取“名称”的值、“地址”的值（这是一个对象列表）？
I am not experienced with jQuery and JSON data handling in javascript. So, I would like to ask some suggestions on how to handle this data efficiently. Thanks.
我对 javascript 中的 jQuery 和 JSON 数据处理没有经验。所以，我想问一些关于如何有效处理这些数据的建议。谢谢。
回答by Felix Kling
A JSON string gets parsed into a JavaScript object/array. So you can access the values like you access any object property, array element:
JSON 字符串被解析为 JavaScript 对象/数组。因此，您可以像访问任何对象属性、数组元素一样访问这些值：
var name = json_data.contact[0].name;
var addresses = json_data.contact[0].address;
Do access the values inside each address, you can iterate over the array:
访问每个地址内的值，您可以遍历数组：
for(var i = addresses.length; i--;) {
var address = addresses[i];
// address.city
// address.street
// etc
}
If you have not so much experience with JavaScript, I suggest to read this guide.
如果您对 JavaScript 没有太多经验，我建议您阅读本指南。
