提取json数据 [英] extracting json data

问题描述

我从远程服务器上获取了一些json，结果返回如下:

I have some json from a remote server and the results are returned like this:

[{"item1":"tag1","a1":"b1"},{"item2":"tag2","a2":"b2"}]

我如何获得a1和a2的值?

How would I get the value of a1 and a2?

谢谢

推荐答案

使用 JSON.parse() 如果数据仍为字符串形式:

Use JSON.parse() if the data is still in string form:

var rawData = '[{"item1":"tag1","a1":"b1"},{"item2":"tag2","a2":"b2"}]';
var parsed = JSON.parse(rawData);
console.log(parsed[0].a1); // logs "b1"
console.log(parsed[1].a2); // logs "b2"

演示: http://jsfiddle.net/mattball/WK9gz/

因为您使用的是jQuery，所以将$.get()替换为$.getJSON()，jQuery会自动为您解析JSON.在success回调内部，您将具有一个与—一起使用的普通JavaScript对象.无需解析.

Since you're using jQuery, swap out $.get() for $.getJSON() and jQuery will automagically parse the JSON for you. Inside of the success callback, you'll have a normal JavaScript object to work with — no parsing required.

$.getJSON('http://example.com/foo/bar/baz', function (data)
{
    console.log(data[0].a1); // logs "b1"
    console.log(data[1].a2); // logs "b2"
});

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