在不知道属性名称的情况下访问JavaScript的对象属性 [英] Accessing a JavaScript's object property without knowing that property name

问题描述

情况

我有一个返回的JSON对象。以下是一个例子。此特定示例中的 who 可以更改为所需的任何属性名称。所以例如下次这将是 name 而不是谁

I have a JSON object which is returned. And Below is an example of one. The who in this particular example can change to whatever property name is required. So for example next time this will be name rather than who

 [{"who":"Arthur"},{"who":"Craig"},{"who":"Dan"},{"who":"Daniel"},{"who":"Frank"},{"who":"Ian"},{"who":"jamie"},{"who":"Jason"},{"who":"jaz"},{"who":"Liam"},{"who":"Paul"},{"who":"Shaun"},{"who":"Wayne"}]

问题

在我的JS中我需要能够引用该属性并访问其数据而不使用其名称，因为名称将始终不同。

In my JS I need to be able to refer to the property and access its data without using its name as the name will always be something different.

我尝试了什么

data.forEach(function(m){
    console.info(m); // Object { who="Craig"}
    console.info(m.who); // Craig, as expected
    console.info(m[0]); // now not sure who to get it if who changes to name
});

推荐答案

Object.keys（m ）[0] 应返回对象中的第一个可枚举属性名称 m 。

Object.keys(m)[0] should return the first enumerable property name in the object m.

所以如果 m = {who：Arthur}; 那么 m [Object.keys（m）[0]] 将Arthur。

https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Global_Objects/Object/keys

或者： Object.values（m）[0] 。请参阅 Object.values

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