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About W3Schools

The largest web developer site on the internet.

3 billion pages displayed each year.

60 million visitors each month.

What is W3Schools?

W3Schools is a school for web developers, covering all the aspects of web development:

W3Schools was created in 1998, and derives its name from the World Wide Web (WWW) but is not affiliated with the W3C.

Easy Learning

W3Schools has focus on simplicity.

W3Schools practice easy learning.

W3Schools uses simple code examples and simple illustrations of how to use it.

W3Schools' tutorials start from basic level and move all the way up to professional references.

Try It Yourself

W3schools presents thousands of code examples.

By using our online editor, 来试试吧, you can edit examples and execute computer code experimentally, to see what works and what does not, before implementing it.

W3Schools is Free

W3Schools is, and will always be, a completely free developers resource.

You Can Help

Many people work very hard to ensure w3schools remains useful, updated, and interesting.

If you find an error, or a broken link, please tell us about it.

Use the link "REPORT ERROR" at the bottom of each page.

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W3Schools Demographics

Origin Percent
Asia 38 %
Americas 30 %
Europe 27 %
Africa 3 %
Oceania 2 %

Source: Google Analytics

W3Schools is optimized for learning and training. 示例 might be simplified to improve reading and learning. Tutorials, references, and examples are constantly reviewed to avoid errors, but we cannot warrant full correctness of all content. While using W3Schools, you agree to have read and accepted our terms of use, cookie and privacy policy.

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