如何使用ExtJS获取/列出JSON数据的所有字段名称？ [英] How to get/list all field names of a JSON data with ExtJS?

问题描述

我有这个json数据：

I have this json data:

[
{"ID":"1","name":"google","IP":"69.5.33.22","active":"true"},
{"ID":"2","name":"bing","IP":"70.5.232.33","active":"false"}
]

获取所有属性名称（？），如：

I want to get the all property names (?), like:

名称，ID，IP，活动

name,ID,IP,active

注意：我不介意谷歌，70.5.232.33等名称和IP是什么，只是我想得到这些字段。

Note: I don't mind what is there at "name" and "IP" like google, 70.5.232.33, etc. Just, I want to get the fields itself.

推荐答案

var jsonString = [
    {"ID":"1","name":"google","IP":"69.5.33.22","active":"true"},
    {"ID":"2","name":"bing","IP":"70.5.232.33","active":"false"}
];
var keyArray = Ext.Object.getKeys(Ext.JSON.decode(jsonString));
console.log(keyArray) // ["ID","name","IP","active"]

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