Add Interactivity with JavaScript

TechIntermediateHome

90 minutes

5 steps

·Intermediate

After 90 min: A webpage with buttons, forms, and interactive elements that respond to user actions

What you need

LaptopText editorWeb browser

The 90-Minute Plan

Understand DOM0–15 min

Learn that JavaScript manipulates the Document Object Model. Practice selecting elements.

Handle Events15–35 min

Add click listeners to buttons. Make elements change color or text on click.

Build a Form35–55 min

Create a form that validates input and shows errors if data is invalid.

Use Local Storage55–75 min

Save user data to browser storage so it persists after page reload.

Ship & next steps75–90 min

Deploy your interactive page. Test across browsers. Next: learn frameworks like React.

Pro Tip

Use console.log() to debug. Learn DevTools well. Build incrementally and test often.

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