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.
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.
// 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'));
// 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.
Customised Questions
Question created based on your report to help you improve your skills.
What is the difference between Array.reduce() and Array.map()?
Explain the concept of dynamic programming.
What does Object.freeze() do?
Tag overview
Instantly identify your skill gaps and transform weaknesses into mastery with our targeted learning recommendations.
Array methods
What is the main advantage of using the reduce method?
EasyProgress report
Visualize your progress in an easy to digest format. View your progress over time and see how you're progressing.
Questions Answered
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
Learning JavaScript Made Simple
TechBlitz is the number one place to learn JavaScript. Supplying you with a wide range of real-world JavaScript challenges.