Browser API

Browser APIs and Web APIs

15 program solutions

Program Solutions

Geolocation API

Get user location using Geolocation API

Notifications API

Display browser notifications

Clipboard API

Copy and paste using Clipboard API

Fullscreen API

Enter and exit fullscreen mode

Page Visibility API

Detect when page is visible or hidden

Web Workers

Run scripts in background threads

Service Workers

Create service workers for offline support

IndexedDB

Use IndexedDB for client-side storage

File API

Read files using File API

Canvas API

Draw on canvas element

Web Audio API

Create and manipulate audio

Speech Synthesis

Convert text to speech

Vibration API

Control device vibration

Battery API

Get battery status

Intersection Observer

Observe element visibility

Topic Strategy: Browser API

This topic is best practiced through repetition with variation. Solve each program, then modify constraints and test alternate approaches so you understand why one solution performs better than another.

During interviews, explain the approach before coding: input assumptions, core logic, complexity, and edge cases. Clear reasoning often matters as much as final code correctness.

Once comfortable, time-box each question and target clean, readable code with meaningful variable names and a quick dry run explanation.