22 June 2026
JavaScript in 5 Days
JavaScript in 5 Days is coming soon to the App Store and Google Play.
Learn more about JavaScript in 5 Days
Learn JavaScript quickly and effectively with JavaScript in 5 Days - a structured course designed to take you from complete beginner to confident coder in just five days.
The app contains 63 carefully organized lessons that take you from your very first line of code all the way to working with the browser. Whether you are new to programming or strengthening your skills, you will find clear explanations, practical examples, and useful tips throughout the course.
The 5-day plan
- Day 1 - Getting started: output, numbers, strings and your first variables
- Day 2 - Types, operators and comparisons
- Day 3 - Collections and control flow: arrays, objects, conditions and loops
- Day 4 - Functions and built-in tools: scope, dates, random and regular expressions
- Day 5 - JavaScript in the browser: the DOM, events, timers and forms
What you will find inside
- 63 lessons organized into a simple 5-day learning plan
- 82 runnable code examples that teach through real JavaScript, each with its output
- 63 practical tips that highlight best practices and common pitfalls
- Interactive keyword explanations: tap keywords like
var,function,for, orifinside code examples to instantly see their meaning and usage - Powerful lesson search across every lesson, example, and keyword
- Progress tracking, and light and dark themes that follow your system setting
Topics covered
- Variables and data types
- Operators and expressions
- Conditional statements and loops
- Functions and scope
- Strings, arrays, and objects
- Dates, math, and random numbers
- Regular expressions
- The DOM, events, timers, and form validation
The app works fully offline and does not collect any personal data.
Whether you want to learn JavaScript for web development, automation, or general programming, JavaScript in 5 Days gives you a clear and practical path to follow. Start your JavaScript journey and learn step by step in just 5 days.