Looking for an explanation on the purpose of making a function like this in js

Question

I tried to search for an answer but without even knowing what this is called, not really sure what to search for. I am curious as to the full purpose of using a function like this. I know the fat arrow part of it is an anonymous function.

((() => {
    // code
}))();

To add to Dave, it would also be useful when you want to execute a piece of async code without making an async function — MTN, Jun 22 '22 at 18:35
Duplicate: https://stackoverflow.com/questions/9549780/what-does-this-symbol-mean-in-javascript (has a list under "(function(){…})() — IIFE (Immediately Invoked Function Expression)") — Quentin, Jun 22 '22 at 18:37

score 1 · Accepted Answer · answered Jun 22 '22 at 18:35

1

It's called Immediately Invoked Function Expression, or IIFE in short. It's mostly used to avoid polluting the global namespace. You can read more about it here: https://developer.mozilla.org/en-US/docs/Glossary/IIFE

answered Jun 22 '22 at 18:35

anonDelta

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Much appreciated. I will upvote soon as I get another point. – Ian Jun 22 '22 at 19:17

Looking for an explanation on the purpose of making a function like this in js

1 Answers1