Higher Order Functions in JavaScript Explained Simply
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- Опубліковано 11 лют 2025
- Higher Order Functions & Callback Functions in JavaScript Explained Simply
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In JavaScript, a higher-order function is a function that takes one or more functions as arguments, or returns a function as output. These functions are a powerful feature of the language that allow you to write concise and expressive code.
The best way to learn higher order functions (and likely the most “real-world”) is to look at “map()” and “filter()”. Both take functions as arguments where the function is applied to each element in an array.
Map
For example, consider the map function, which is used to apply a function to each element of an array and return a new array containing the results.
The map function is a higher-order function because it takes a function as its argument, in this case the function to apply to each element of the array.
+1 subscriber, There is no way to make a simpler explanation. Thank you so much.
No prob. Sweet name lol
I wish more people would explain code like you. Very good explanations and analogies. It's super easy to understand. I feel like you covered all possible confusions that people might have, that others don't even think of.
I'm mad I didn't find your channel sooner. God tier instructor... thank you!!!
glad i found this channel!!
good lord, all I had needed was the explanation of func vs func(). It all makes sense now, thanks!
Wow 👏.. You've just simplified everything to my understanding. I'm your new subscriber.
You just gained a subscriber!! Thanks for teaching!
You, sir, now have a new subscriber. Great lesson, thank you!
That's exactly what I was looking for. Thanks!
love the pokemon reference. ill sub just cus of that. thank u, im still so confused over all this but you helped me a good bit along the way. well explained :)
Awesome!!! Thank you for making this video!!! :)
Haha you make these video’s entertaining and educational 👍
I notice when I say something crazy in the beginning the watch time goes up Lmao
@@TeddySmithDev yea man I think you are onto something. Lol. Then I learn about roided out function passing to another function. Pretty cool haha
lmao
Awesome explanation! Thank you very much! The explanation with the return()() helped me a lot :D
I love you for this bro.
Thank you so much ! ❤
this actually made it more confusing
nvm it actually makes sense now lol
I real life laughed lol
The life of a developer basically
you just explained how it is done. but the important thing to know is why is it done this way? wrapping a function using another function, why? what r the benefits?
it seems extra useless step.
so that you can execute code within code. also, the code can be modified and changed to whatever you want because it is being passed in. instead of hard coding it you just pass it in.
Partial application
G0D approves