Javascript 如何从json数据中检索数据
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How to retrieve data from json data
提问by ROB ENGG
[{"id":7,"message":"This is another test message","taker_id":"131","giver_id":"102","status":"0","stamp":"2016-08-11"}]
That's my response. I try to get a datum. I have tried data.idbut it fails and returns undefined.
这就是我的回应。我试图获得一个数据。我试过了，data.id但它失败并返回undefined。
回答by Zombiefledderer
As I assume that you are working with a JSON string, you first have to parse the string into and JSON object. Else you couldn't reach any of the properties.
由于我假设您正在使用 JSON 字符串，因此您首先必须将字符串解析为 JSON 对象。否则，您无法访问任何属性。
parsedData = JSON.parse(data);
Then you can get your property:
然后你可以得到你的财产：
parsedData[0].id
回答by Jonathan Newton
This seems to work just fine
这似乎工作得很好
var data = [{
"id":7,
"message":"This is another test message",
"taker_id":"131",
"giver_id":"102",
"status":"0",
"stamp":"2016-08-11"
}];
console.log(data[0].id);
回答by Kerrin631
if you just want to get the id from this one object then data[0].id will work just fine. If you expect to have multiple objects in that same array then you can use a loop. for example if this is angular you can do:
如果您只想从这个对象中获取 id，那么 data[0].id 就可以正常工作。如果您希望在同一个数组中有多个对象，那么您可以使用循环。例如，如果这是有角度的，你可以这样做：
<div ng-repeat='info in data'>
<p>{{info.id}}</p>
</div>
This will allow you to iterate through multiple objects within the array and get all id's.
这将允许您遍历数组中的多个对象并获取所有 id。
