Easy Implementation of Debounce in JavaScript

In this short tutorial, I've shown how to easily implement debounce in JavaScript.

Debouncing is a technique used in web development to improve performance by delaying the execution of a function until the specified amount of time has passed since the last time it was called.

In the context of the search input, the debouncing can be used to delay the execution of a search function until the user has finished typing. This can easily prevent excessive processing & reduce the number of unnecessary network requests.

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[nagarajansubramani]

You can skip the arrow function wrap inside setTimeout and just do
setTimeout(callback, delay);

[yamanjazzar-js]

Good explaining an interesting performance technique 👏👏👏

[AdroSlice]

This can easily be generalized into a neat little helper function:
const lastTimeoutIDs = [];
const debounce = (fn, delay) => {
let index = lastTimeoutIDs.push(0);
return (...args) => {

setTimeout(() => fn(...args), delay);
}
}

// Usage
const doSomething = () => console.log("Thing done");
const doSomethingDebounced = debounce(doSomething, 1000);
doSomethingDebounced();


Lmk if i made any mistakes :)

[switchlyrics.]

can it be used to delay http request in your chat app tutorial, coz you loop through request to show live replies, help me on that because it uses lots of bandwith