CODEWITHSUNDEEP
javascriptiife
user
user

Reputation: 13

How to get return value of IIFE?

I have the following IIFE in a file iife.js:

(function() {
    return "Hello World!";
}());

I would like to get the result of this function in another file:

var result = require("./iife");
console.log(result);

But the result is {} instead of Hello World!.

How can I access the return value of the IIFE from another file, preferably without changing the code in iife.js?

Upvotes: 1

Views: 709

Answers (1)

Quentin
Quentin

Reputation: 944075

You have to capture it on the left hand side:

const return_value = (function() {
    return "Hello World!";
}());

But if you want to export it from a CommonJS module then you need to assign it to the module's exports:

module.exports = return_value;

But if you are using a CommonJS module then there is no point in using an IIFE in the first place. IIFEs are used to isolate variables, which modules do anyway.

module.exports = "Hello World!";

Upvotes: 8

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