将键值对附加到 json 对象
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Appending a key value pair to a json object
提问by Aayush
This is the json objectI am working with
这是我正在使用的json 对象
{
"name": "John Smith",
"age": 32,
"employed": true,
"address": {
"street": "701 First Ave.",
"city": "Sunnyvale, CA 95125",
"country": "United States"
},
"children": [
{
"name": "Richard",
"age": 7
},
{
"name": "Susan",
"age": 4
},
{
"name": "James",
"age": 3
}
]
}
I want this as another key-value pair :
我希望这是另一个键值对：
"collegeId": {
"eventno": "6062",
"eventdesc": "abc"
};
I tried concat but that gave me the result with || symbol and I cdnt iterate. I used spilt but that removes only commas.
我试过 concat 但结果是 || 符号，我 cdnt 迭代。我使用了溢出但只删除了逗号。
concattedjson = JSON.stringify(JSON.parse(json1).concat(JSON.parse(json2)));
How do I add a key pair value to an existing json object ? I am working in javascript.
如何将密钥对值添加到现有的 json 对象？我在 JavaScript 中工作。
采纳答案by Jobert Enamno
This is the easiest way and it's working to me.
这是最简单的方法，它对我有用。
var testJson = {
"name": "John Smith",
"age": 32,
"employed": true,
"address": {
"street": "701 First Ave.",
"city": "Sunnyvale, CA 95125",
"country": "United States"
},
"children": [
{
"name": "Richard",
"age": 7
},
{
"name": "Susan",
"age": 4
},
{
"name": "James",
"age": 3
}
]
};
testJson.collegeId = {"eventno": "6062","eventdesc": "abc"};
回答by Travis J
You need to make an object at reference "collegeId", and then for that object, make two more key value pairs there like this:
您需要在引用“collegeId”处创建一个对象，然后对于该对象，再创建两个键值对，如下所示：
var concattedjson = JSON.parse(json1);
concattedjson["collegeId"] = {};
concattedjson["collegeId"]["eventno"] = "6062";
concattedjson["collegeId"]["eventdesc"] = "abc";
Assuming that concattedjson is your json object. If you only have a string representation you will need to parseit first before you extend it.
假设 concattedjson 是您的 json 对象。如果您只有一个字符串表示，parse则在扩展它之前需要先使用它。
Edit
编辑
demofor those who think this will not work.
demo对于那些认为这行不通的人。
回答by Jonathan M
Just convert the JSON string to an object using JSON.parse()and then add the property. If you need it back into a string, do JSON.stringify().
只需使用将 JSON 字符串转换为对象JSON.parse()，然后添加属性即可。如果您需要将其恢复为字符串，请执行JSON.stringify().
BTW, there's no such thing as a JSON object. There are objects, and there are JSON strings that represent those objects.
顺便说一句，没有 JSON 对象这样的东西。有对象，并且有表示这些对象的 JSON 字符串。
回答by shalonteoh
const newTestJson = JSON.parse(JSON.stringify(testJson));
newTestJson.collegeId = {"eventno": "6062","eventdesc": "abc"};
testJson = newTestJson;
