r/learnjavascript • u/hsnice • Jul 19 '21

JavaScript Function Facts

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255 Upvotes

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20

u/[deleted] Jul 19 '21

function declarations aren't the only thing that is hoisted, variable declarations with var are also hoisted.

e.g. the following does not work:

console.log('hello', future());
const future = function() { 
   return ' world'; 
}

3

u/Claudioub16 Jul 19 '21

I'm new to programming, but I really dislike hoisting. Why would you want to hoist a function?

7

u/toastertop Jul 19 '21

Functions called before they are declared, won't throw a undefined error.

3

u/Claudioub16 Jul 19 '21

Since I'm novice allow me to ask this question: wouldn't be a easy fix to just put the function before the call?

1

u/sateeshsai Jul 21 '21

flexibility. i prefer to keep all relevant functions grouped at one place.