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Erasmus Kotoka
Erasmus Kotoka

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πŸš€ JavaScript Functions: Arrow Functions, Callbacks, and Closures πŸ“œ

Hey, JavaScript enthusiasts! 🌟 Ready to dive into the world of functions?

Let’s break it down with some cool concepts you’ll use all the time!

  1. Arrow Functions ➑️

Say goodbye to long function syntax! Arrow functions are short and sweet 😎.

Plus, they handle this a bit differently.


const add = (a, b) => a + b;

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No more typing function! Less is more, right? 🀩

  1. Callbacks πŸ“ž

Callbacks are like passing notes between functions. One function calls another when it’s ready!

They’re super helpful for tasks that take time, like fetching data from a server.


function processUserInput(callback) {

 const name = prompt('Enter your name');

 callback(name);

}

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Just drop the callback like it’s hot πŸ”₯!

  1. Closures πŸ”’

Closures are like function vaultsβ€”securely storing variables even after the function is done. Need access to an old variable? Closures have your back πŸ’Ό!


function outer(outerVar) {

 return function inner(innerVar) {

  console.log(outerVar, innerVar);

 };

}

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Unlock the power of closures in your code πŸ”“!

Pro Tip: Mastering these will take your JavaScript skills to the next level! πŸ† Keep coding, keep learning! πŸ’»πŸ’‘

JavaScript #CodeSmart #WebDevelopment #ArrowFunctions #Callbacks #Closures

COdeWith #KOToka

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