带有变量的对象键名 [英] Object key name with a variable

问题描述

我正在尝试创建一个对象，该对象的一个​​键名取自变量.

I am trying to make an object which has one key name taken from a variable.

var key="KeyName"
var obj={
 key:"value"
}

当我想访问KeyName"密钥时，我不能，因为我刚刚创建了一个名为key"而不是KeyName"的密钥.我在这里找到了一个解决方案:

When I want to access the "KeyName" key,I can't because I have just created a key with the name "key" not "KeyName". I found a soution here :

JavaScript 通过变量设置对象键

var key="KeyName"
var obj={
[key]:"value"
}

但它不起作用.怎么办?

But it doesn't work. What to do?

推荐答案

你可以这样:先初始化对象，用括号[]设置key值.

You can do it like this: first initialize the object and use brackets [] to set key value.

var obj = {};
var key = "KeyName";
obj[key] = "value";

这篇关于带有变量的对象键名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！