Debounce vs Throttle in JavaScript with Real Examples (Search Bar & Scroll)

Stop Your Search Bar From Crashing Your Backend - Build a High-Performance Search Bar | JS Debounce & Throttle.

Firing an API call on every keystroke will hammer your backend and tank your
app's performance. In this video you'll learn how to fix it with two essential
JavaScript techniques: debouncing and throttling.

We build both from scratch in pure JavaScript using closures and setTimeout - no libraries - then cover exactly when to use each one and the #1 mistake that silently breaks debounce in real projects. These come up constantly in production code and technical interviews, so they're worth mastering.

⏱️ Chapters
0:00 The problem: too many API calls
0:38 Debounce vs throttle - the core idea
1:28 Building a debounce function
3:39 Building a throttle function
5:18 When to use which
5:49 The mistake that breaks debounce
7:01 Leading, trailing & Lodash
7:34 Recap

🔑 Key takeaway: debounce waits, throttle controls.

Debounce → search inputs, form validation, autosave
Throttle → scroll, resize, mousemove, drag

💬 Which one tripped you up first? Let me know in the comments.
👍 Like and subscribe for more JavaScript performance and interview content.

#javascript #webdevelopment #coding #frontend #javascriptinterview

Видео Debounce vs Throttle in JavaScript with Real Examples (Search Bar & Scroll) канала CODE BLOKE