Learn JavaScript

Learning JavaScript made simple

TechBlitz is the number one coding challenge platform to learn JavaScript. Supplying you with a wide range of real-world JavaScript challenges.

Explore roadmaps

Daily coding challenges

Master JavaScript with our daily coding challenges. Learn new JavaScript skills in as little as 5 minutes a day, start streaks, battle with friends, and more! Our daily coding challenges also work on any device - meaning you can learn JavaScript on your phone, tablet, or computer.

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Learn to Code for Free with Daily JavaScript Challenges

Master web development through hands-on practice with our free daily coding challenges. Perfect for learning JavaScript and essential tech skills, our platform works seamlessly on both desktop and phone – making it easy to learn to code anywhere, anytime.

Each challenge includes a built-in tech skills assessment to track your progress as you grow from beginner to professional developer. Start your coding journey today with practical exercises that take just 5-10 minutes to complete.

JavaScript roadmaps for everyone

Every coding roadmap is created based on your current coding skills. We analyze your current skills set, and are able to create a roadmap that is tailored to you. Meaning every user will be getting a unique experience with TechBlitz.

Analyze your skills

First, we need to understand how much you already know. We start by getting you to answer a few coding questions to gauge your current skill level. This enables us to create the perfect coding roadmap.

Your answers

Generate your roadmap

After assessing your skills, we create a personalized learning path with short-form challenges and interactive coding tasks.

Generating your roadmap...

We're working hard to create a coding roadmap that's perfect for you.

Learn JavaScript with real-world coding challenges

Learn JavaScript the best way possible. With real-world coding challenges that mimic real-world problems.

Other platforms

// this is a challenge to learn JavaScript

function mysteryFunction(arr) {
  let result = [];
  for (let i = 0; i < arr.length; i++) {
    result.push(arr[i] * (Math.random() * 10));
  }
  console.log('Wow, so random:', result);
  return result;
}

function reverseString(str) {
  return str.split('').reverse().join('') + '✨';
}

console.log(mysteryFunction([1, 2, 3]));
console.log(reverseString('TechBlitz'));

techblitz

// this is a challenge to learn JavaScript,
// perfect for beginners

export const fetchLatestData = async () => {
  const response = await fetch('https://api.example.com/data');
  const data = await response.json();

  // transform the data
  const transformedData = data.map(item => ({
    ...item,
    formattedDate: new Date(item.date).toLocaleDateString()
  }));

  return transformedData;
}

fetchLatestData();

Track your JavaScript knowledge

Get actionable insights with personalized performance analytics. Track your coding journey, identify areas for improvement, and celebrate your achievements with comprehensive progress reports.

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Customised Questions

Question created based on your report to help you improve your skills.

What is the difference between Array.reduce() and Array.map()?

MediumCustom

Explain the concept of dynamic programming.

HardCustom

What does Object.freeze() do?

EasyCustom

Tag overview

Instantly identify your skill gaps and transform weaknesses into mastery with our targeted learning recommendations.

Array methods

React hooks

Async

Array methods

What is the main advantage of using the reduce method?

Easy

Progress report

Visualize your progress in an easy to digest format. View your progress over time and see how you're progressing.

Questions Answered

38.1%

Last 30 days

Everything you need to learn JavaScript

Bite-sized Learning

Master complex JavaScript concepts in just 15 minutes a day with our expertly crafted micro-challenges. Perfect for busy developers.

Daily JavaScript Challenges

Daily coding challenges to improve your JavaScript skills. Learn to code for free, with our short-form, interactive coding challenges from a range of topics including JavaScript, React, Node.js, web development, and more.

Vibrant JavaScript Community

Connect with a community of passionate JavaScript developers worldwide. Share solutions, discuss approaches, and accelerate your learning through peer collaboration.

Instant Feedback

Get real-time feedback on your JavaScript solutions. Learn from mistakes and improve faster.

Advanced Analytics

Visualize your JavaScript coding journey with detailed performance metrics. Track your progress across topics, algorithms, and problem-solving patterns.

Seamless Mobile Learning

Learn JavaScript on your phone. Practice during commutes or breaks with our optimized mobile interface - never miss a day of learning.

Frequently asked questions