Javascript 如何读取json

我有以下JSON对象

{"feed":[
    {"news":
      {"adopted_from":null,"user_id":null,"description":"this is test","id":2}
   },
   {"news":
     {"adopted_from":null,"user_id":null,"description":"like unlike done","id":1}
    }
]}

---

我想检索新闻的id。我尝试了许多不同的方法（例如，

feed[0].news.id

，

feed.news.id

，

feed[[0].news.id]

），但无法访问该值。有谁能帮助我如何使用JavaScript访问它吗？

我从上面复制并粘贴了您的JSON，并尝试了以下操作，效果很好：

    var data = {"feed":[{"news":{"adopted_from":null,"user_id":null,"description":"this is test","id":2}},{"news":{"adopted_from":null,"user_id":null,"description":"like unlike done","id":1}}]};
    // alert the first news id
    alert(data.feed[0].news.id);

它从数组中的第一个

news

对象获取所需的id

这对我很有用：

var f = {"feed":[{"news":{"adopted_from":null,"user_id":null,"description":"this is test","id":2}},{"news":{"adopted_from":null,"user_id":null,"description":"like unlike done","id":1}}]}
alert( f.feed[0].news.id )

var feed = json_decode(yourData)
for(var counter in feed) {
    console.log(feed[counter].news.id);
}