检查JSON对象中的值 [英] Check for a value in a JSON object

问题描述

我需要找出ID是否出现在我的JSON对象中，例如:

I need to find out if an id occurs in my JSON object, for example:

{
  "requested": "2009-07-25T14:12:25+01:00",
  "channels": [
    {"id": 1, "name": "General", "created": "2009-07-25 14:00:02"}
  ]
}

具体来说，我需要检查我的ID(例如2)是否出现在channels. i .id中.该怎么办?

Specifically I need to check if my id (say, 2) occurs in channels.i.id. How can this be done?

推荐答案

尝试一下:

var id = 2,
    found = false;
for (var i=0; i<channels.length; i++) {
    if (channels[i].id == id) {
        found = true;
        break;
    }
}

这篇关于检查JSON对象中的值的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！