Build a JavaScript autocomplete dropdown using pure vanilla code — no libraries or frameworks!

Learn how to build a JavaScript autocomplete dropdown using only vanilla JavaScript — no libraries, no frameworks.

In this hands-on beginner tutorial, we create a responsive input box that filters suggestions from an array (like fruits) as you type. You can easily adapt this for things like a city dropdown, search bar, or dynamic form field.

We'll walk through DOM manipulation, array filtering, and event handling — perfect for anyone learning frontend basics or working on JavaScript UI projects.

In this quick JavaScript Bytes tutorial, you’ll learn how to:

Create an input field with live suggestions

Filter data dynamically as the user types

Use event listeners and DOM manipulation

Build a clean UI without external dependencies

🎯 Perfect for beginners and intermediate developers looking to sharpen core JavaScript skills.

📌 Topics covered:
autocomplete dropdown, javascript input suggestions, filter list with javascript, pure javascript project, javascript autocomplete box, live search javascript, html css javascript project

00:00 Introduction
00:30 Live coding for autocomplete dropdown control
01:35 Style for autocomplete control
01:48 CSS for autocomplete dropdown explained
02:53 JavaScript code for autocomplete dropdown
05:04 Demo

👍 Like, Subscribe & Comment if this helped!