关键字中带有点的Javascript字典

Question

I want create a dictionary in javascript, one of the key being stored in an environment variable. I want to do something like this:

const plop = { process.env.PLOP: "plop" }

however it seems invalid:

SyntaxError: Unexpected token .

Any idea how I could make this valid?

Answer 1

由于您使用的是ES6语法（注意到const的用法），因此可以使用计算所得的属性名称 ：

const plop = { [process.env.PLOP]: "plop" }

Answer 2

You need computed property names :

const plop = { [process.env.PLOP]: "plop" }

For a wider compatibility (if necessary):

var plop = {};
plop[process.env.PLOP] = 'plop';