Free books, runnable examples, exercises and quizzes for HTML, CSS, JavaScript, Python, PHP, Java, and Git. Try every example right in your browser — no install, no signup.
Structured chapters, runnable examples, and a quiz at the end. Everything's free.
42 chapters · Beginner
The standard markup language for web pages. Tags, semantics, forms, accessibility.
61 chapters · Beginner
Style web pages. Layouts, colors, typography, animations, grid, flexbox.
88 chapters · Intermediate
Make web pages interactive. Variables, async, modules, the DOM and fetch.
74 chapters · Beginner
Readable, batteries-included. "Hello world" to data analysis and web apps.
55 chapters · Intermediate
Server-side scripting that's still everywhere. Built-ins, OOP, frameworks.
63 chapters · Intermediate
Strong types, the JVM, the syntax that's followed you everywhere.
29 chapters · Beginner
Version control fundamentals. Branch, merge, rebase, and stay calm.
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SQL, TypeScript, React, Node…
Every code example on W3docs has a "Try it Yourself" button. Edit the source, hit run, see the output instantly. No setup, no install.
<!DOCTYPE html>
<html>
<head>
<title>Hello</title>
</head>
<body>
<h1>Welcome to W3docs</h1>
<p>Edit me ↓</p>
</body>
</html>Edit me ↓
Project-based courses with hours of HD video, downloadable code, and a certificate of completion.
Learn CSS for the first time or brush up your CSS skills and dive in even deeper. EVERY web developer has to know CSS.
Learn Python from the ground up and use Python to build a hands-on project from scratch!
Modern JavaScript from the beginning - all the way up to JS expert level! THE must-have JavaScript resource in 2020.
Master Node JS, build REST APIs with Node.js, GraphQL APIs, add Authentication, use MongoDB, SQL & much more!
Dive in and learn React.js from scratch! Learn Reactjs, Hooks, Redux, React Routing, Animations, Next.js and way more!
Master Angular (formerly "Angular 2") and build awesome, reactive web apps with the successor of Angular.js
10 questions, around 5 minutes. Instant feedback at the end — see exactly where the gaps are.
Elements, semantics, forms, accessibility. A solid baseline check.
From `let` to closures, async to the event loop.
Hands-on exercises grouped by language, solved right in the browser.
Online utilities that just work in your browser — no install, no signup.
Live HTML/CSS/JS editor with preview.
Strong, unique passwords on demand.
Escape HTML entities both ways.
Side-by-side diff for any two snippets.
Pretty-print and validate JSON.
Tidy stylesheets, shorthand, sort properties.
Convert Markdown to HTML on the fly.
Binary, octal, decimal, hex — all directions.
Decode, verify, and inspect JSON Web Tokens.
Check what's supported in your browser.
Symmetric phrase encryption made simple.
Encode / decode text and files.
Find the nearest Tailwind class for any color.
19 single-purpose string utilities. Paste, run, copy.
Deep dives, news, and the occasional opinion.
Coders love MacBook for the powerful experience it provides during programming and testing. Coding it on with Java and HTML is a seamless experience for which it is highly popular.
Designing websites entails different skills. It involves a fair understanding of aesthetics, trends, and how search engine algorithms rank websites.
Considering this, you have to know the best programming language to use in setting up your website. Below is a list to help you with that.
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