获取json对象的大小 [英] get size of json object

问题描述

我有一个由AJAX请求返回的json对象，我在使用 .length 时遇到了一些问题，因为它一直在返回 undefined 。只是想知道我是否正确使用它：

i have a json object that gets returned by an AJAX request and I am having some trouble with the .length because it keeps returning undefined. Just wondering if I'm using it right:

console.log(data.length);
console.log(data.phones.length);

它们都返回 undefined 即使它们是有效对象。

They both return undefined even though they are valid objects.

更新：

返回的JSON对象示例：

Update:
Sample of the JSON object returned:

{"reqStatus":true,"phones":{"one":{"number":"XXXXXXXXXX","type":"mobile"},"two":{"number":"XXXXXXXXXX","type":"mobile"}}}

推荐答案

你可以使用类似的东西

<script type="text/javascript">

  var myObject = {'name':'Kasun', 'address':'columbo','age': '29'}

  var count = Object.keys(myObject).length;
  console.log(count);
</script>

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