W3Schools is optimized for learning and training. Examples might be simplified to improve reading and learning. Tutorials, references, and examples are constantly reviewed to avoid …

W3Schools maintains a complete JavaScript reference, including all HTML and browser objects. The reference contains examples for all properties, methods and events, and is continuously …

At W3Schools you will find complete references about HTML elements, attributes, events, color names, entities, character-sets, URL encoding, language codes, HTTP messages, browser …

Note: This is an optional feature. You can study at W3Schools without creating an account.

With W3Schools online code editor, you can edit HTML, CSS and JavaScript code, and view the result in your browser. The window to the left is editable - edit the code and click on the "Run" …

Example <a href="https://www.w3schools.com"> This is a link </a> Try it Yourself »

W3Schools offers free online tutorials, references and exercises in all the major languages of the web. Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, …

Python Functions A function is a block of code which only runs when it is called. A function can return data as a result. A function helps avoiding code repetition.

PHP References W3Schools' PHP reference contains different categories of all PHP functions, keywords and constants, along with examples.

If you want to save your HTML, CSS and JavaScript code, and create your own website, check out W3Schools Spaces. W3Schools Spaces is a website-building tool that lets you make and …