What the heck is a IIFE? JavaScript Tutorial With Bonus var/let/const!

In this video I'll discus to you what JavaScript IIFE is, and how functions and scope work! Make sure to stay all the way to the end! #javascript #IIFE

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[abdelmananabdelrahman]

This is the best explanation of IIFEs on YouTube

[ProgramWithErik]

IIFE, have you used it? Let me know! Any suggestions for my next video?

[busyrand]

This was a very nice explanation. I like classic JavaScript paradigms and think the IIFE is useful when importing packages of code. There is something about it that is timeless. I also appreciate how you showed the various ways IIFEs are written with different syntax. Thanks for the demonstration with var and let also.

[anthnorm]

I'm not new to programming but it was a long time ago (15 years) I did anything with it. So Thank you for the refresh. I don´t even remember this one for some reason?
I caught it doing some test in LinkedIn and was dumb founded. I failed of course. Anyways, thank you.

[IsaacA]

I use IIFEs with pretty much everything I make. Even though I'm using ES6 modules. I wrap all my code inside an IIFE and import the module.

[chriscdn]

I've used them with jQuery plugins (which I no longer write) to scope the $ variable:


(function($) {
// my jquery code
})(jQuery)


More recently I've used them with await/async:


(async () => {
await someOtherFunction
})()


That's pretty much it!