It's not a bug. It's an undocumented feature. 🐞 In programming, unexpected behaviors are chances to grow and improve. Every “bug” is an opportunity to solve problems, make our code better, and learn something new. Next time you find an undocumented feature, remember it’s a step towards becoming better. Keep pushing, keep trying, and keep learning. Happy Coding 💚 #Programming #Coding #ProblemSolving #Learning #Tech
W3Schools.com
E-Learning Providers
On a mission to make learning available for everyone, everywhere
About us
W3Schools is the world's largest web developer site. For over 20 years, we’ve provided free tutorials and hands-on coding exercises in HTML, CSS, JavaScript, Python, SQL, and more. Millions of students, teachers, and developers use W3Schools to build skills and grow their knowledge. Learn at your own pace with interactive lessons, quizzes, and certifications. Start coding today with W3Schools – where learning is simple, accessible, and fun.
- Website
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http://www.w3schools.com
External link for W3Schools.com
- Industry
- E-Learning Providers
- Company size
- 11-50 employees
- Type
- Privately Held
- Founded
- 1998
- Specialties
- education, edutech, edtech, web development, digital, coding, developer, learn to code, learning, web developer, tutorials, tech, upskilling, reskilling, HTML, CSS, Javascript, python, data science, machine learning, SQL, school, technology, and code
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Sandnes, NO
Employees at W3Schools.com
Updates
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If anyone wants to practise what they learn, our interactive tutorials and exercises are open and free. Happy coding! 💚
CEO @ W3Schools Network | EdTech Innovator | Scaling Learning & AI Leadership | Helping Millions Make Sense of Code and Technology
Python isn’t just a coding language. It’s a key that unlocks ideas. Today I’m launching the W3Schools series on Python. The first episode gives you an introduction to Python and why it is worth learning, and how easy it is to start. Python was created by Guido van Rossum in 1991. Since then it has grown into one of the most popular languages because it is: – Simple: The syntax reads like English, so beginners pick it up quickly. – Versatile: You can use it for web applications, data analysis, automation, mathematics and more. – Accessible: It runs on Windows, Mac, Linux and even Raspberry Pi. – Efficient: You write fewer lines to get more done, which is why it’s used for rapid prototyping and production-ready software. Python’s general purpose nature means you don’t need to choose a niche before you start. It’s the same language behind Netflix’s recommendation engine and behind scripts that automate your own to‑do list. If you’ve been curious about coding but felt that it is overwhelming, this is for you. We try to keep it practical and easy to understand. Want to see how Python can save you time and open new doors? Watch the first episode. It's simple, clear, and made for beginners. 👉 Follow me to get the next videos. P.S. Our Python tutorial also covers all the topics, so you’ll be in good hands as you learn. #w3schools #python #programming
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W3Schools.com reposted this
🎉 Excited to share that I’ve earned a Professional Certificate in Data Science from W3Schools! 📊🧠 This certification involved successfully passing a comprehensive exam that tested key concepts and practical knowledge in data science — including data analysis, machine learning, data visualization, and statistical thinking. It’s a great milestone in my data journey, and I’m looking forward to applying these skills in real-world projects and continuing to grow in the field. #DataScience #Certification #LifelongLearning #W3Schools #CareerGrowth #MachineLearning #DataAnalytics
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Ever wonder how the page you’re reading right now appears on your screen? It’s not magic. It’s HTML. In 2025, this humble markup language is still the backbone of every website, app and online store. Modern frameworks like React and NextJS ultimately render HTML behind the scenes. Learning HTML means you can build or tweak any webpage, make accessible content and know exactly what your favourite AI tools are generating. And here’s the good news. You don’t need to be a developer to start. HTML is easy to learn, and W3Schools offers a free, interactive tutorial to get you building pages in minutes. No downloads, no credit card, just hands‑on practice. Curious? Sign up for free and see how quickly you can create your own site. Follow W3Schools here on LinkedIn for more tutorials and web‑dev news. #HTML #webdevelopment #w3schools
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Your learning journey starts here. The image you see? That’s what onboarding looks like at W3Schools. Sign up for a free account. No payment, no catch. Just you and the code. Once you’re in, join the leaderboard and pick your own avatar. Compete with other learners. Stay engaged. Unlock new skins for your avatar. Personalize it as you like. Stay committed, and you’ll hit your goals faster than you think. So why study alone? Come see how a simple start can turn into a journey of progress. #w3schools #programming #learning
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We would love to get your take on this! 💚 Click and find out where others stand. #AI #Tech #VibeCoding #Programming
CEO @ W3Schools Network | EdTech Innovator | Scaling Learning & AI Leadership | Helping Millions Make Sense of Code and Technology
Remember when building an app meant poring over every line of code? Today you can vibe an app into existence just by chatting with an AI. It is exciting. Seeing many of my non-technical friends spinning up side projects in just an evening. But what is the consequences of launching software you didn’t actually write and understand? We used to worry about teenagers learning to drive, now we are handing them a self‑driving car and asking them to race. Vibe coding is great for quick prototypes, but what happens when your user count hits 10 000 and hackers take notice? I’d love to see your take. 👇
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With the new semester starting, it's important to stay organized. A to-do list can help you keep track of all your tasks. 📝✨ Why not build your own? Here are 6 reasons to create your own to-do list app with CSS and JavaScript: 1. Learn Basics: Understand the core concepts of coding. 2. Practice CSS: Improve your design skills. 3. DOM Skills: Learn how to interact with web pages. 4. Problem Solving: Enhance your logical thinking. 5. Portfolio Project: Show off your skills to employers. 6. Fun & Customizable: Make it your own and enjoy the process. Ready to start coding? Build your to-do list app today and boost your skills! 🚀 Good Luck! 💚
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Get going with AI Agents. All here, readily available at w3schools.com!
CEO @ W3Schools Network | EdTech Innovator | Scaling Learning & AI Leadership | Helping Millions Make Sense of Code and Technology
AI agents are not science fiction anymore. They’re here, and they need human partners who know how to build and guide them. If you want to work with agents, don’t start with fancy models. Start with the fundamentals. - Learn Python. Most agent frameworks are built in Python. LangChain, LangGraph and CrewAI all use it as their foundation, and even enterprise tools like Semantic Kernel support Python alongside C# and Java. Python is how you customise behaviour, manage memory and connect to data. - Learn JSON. Agents call functions and tools by outputting a JSON object with the function name and parameters. The model doesn’t run the call. Your code does. If you can’t parse and construct JSON, your agent stays mute. - Learn SQL and vector search. Agents need long‑term memory. They use SQL to retrieve structured data and vector databases to recall information in Retrieval Augmented Generation. Understanding how to query both will let you feed your agent accurate context. - Learn YAML or config scripting. Frameworks like CrewAI define agents, roles and workflows in YAML or Python files. Editing these files is how you choreograph multiple agents. - Learn APIs and schemas. Every tool the agent uses, from weather data to code execution is defined by a schema. Knowing how to design and call APIs turns a language model into an actor. These skills aren’t glamorous, but they’re the backbone of agentic AI. Get to know them and you’ll be ready for the future of work. What will you learn next?