将新数组元素添加到JSON对象 [英] Adding a new array element to a JSON object

问题描述

我有一个JSON格式对象，我从一个名为teamJSON的变量中的JSON文件中读取，如下所示：

I have a JSON format object I read from a JSON file that I have in a variable called teamJSON, that looks like this:

 {"theTeam":[{"teamId":"1","status":"pending"},{"teamId":"2","status":"member"},{"teamId":"3","status":"member"}]}

我想添加一个新项目到数组，例如

I want to add a new item to the array, such as

{"teamId":"4","status":"pending"}

结束

{"theTeam":[{"teamId":"1","status":"pending"},{"teamId":"2","status":"member"},{"teamId":"3","status":"member"},{"teamId":"4","status":"pending"}]}

在写回文件之前。添加到新元素的好方法是什么？我接近但所有双引号都被逃脱了。我已经找到了一个很好的答案，但没有一个完全覆盖这个案例。任何帮助都表示赞赏。

before writing back to the file. What is a good way to add to the new element? I got close but all the double quotes were escaped. I have looked for a good answer on SO but none quite cover this case. Any help is appreciated.

推荐答案

JSON 只是一个符号;进行所需的更改 解析 它以便您可以将更改应用于本机 JavaScript对象，然后 stringify 返回 JSON

JSON is just a notation; to make the change you want parse it so you can apply the changes to a native JavaScript Object, then stringify back to JSON

var jsonStr = '{"theTeam":[{"teamId":"1","status":"pending"},{"teamId":"2","status":"member"},{"teamId":"3","status":"member"}]}';

var obj = JSON.parse(jsonStr);
obj['theTeam'].push({"teamId":"4","status":"pending"});
jsonStr = JSON.stringify(obj);
// "{"theTeam":[{"teamId":"1","status":"pending"},{"teamId":"2","status":"member"},{"teamId":"3","status":"member"},{"teamId":"4","status":"pending"}]}"

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