节点使用另一个文件中的变量

Question

I have long list of variables at the beginning of my single file app. How can I move variables to another file and use them from there. Can I do that without requiring them as modules?

My code is written like this so I need variables to work just like the would be in the same file.

const1 = 'apple'
const2 = 'banana'
const3 = 'pear'
…

let1 = const1

console.log(let1)

and that should output apple.

And I want move those const variables from top

Help would be much appreciated!

Answer 1

You have to export the variable in vars.js

 let const1 = 'apple' exports.const1 = const1; 

And then access via:

 var request = require(./vars.js); ... let x = request.const1; 

Hope it helps!

Answer 2

It isn't a good practice but you can declare the variables as properties of the global object...

global.const1 = 'apple'
global.const2 = 'banana'
global.const3 = 'pear'
…

let1 = global.const1

console.log(let1)