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HTML Exercises Many chapters in this tutorial end with an exercise where you can check your level of knowledge.

Python Exercises Many chapters in this tutorial end with an exercise where you can check your level of knowledge.

PHP Tutorial PHP is a server scripting language, and a powerful tool for making dynamic and interactive web pages.

We recommend reading this tutorial, in the sequence listed in the left menu. C++ is an object oriented language and some concepts may be new. Take breaks when needed, and go over …

Learn JavaScript The Programming Language of the Web JavaScript is easy to learn. This tutorial covers everything from basic JavaScript up to the latest 2025 version. Start learning …

Click on the "Run example" button to see how it works. We recommend reading this tutorial, in the sequence listed in the left menu.

XPath Standard Functions XPath includes over 200 built-in functions. There are functions for string values, numeric values, booleans, date and time comparison, node manipulation, …

XSL (eXtensible Stylesheet Language) is a styling language for XML. XSLT stands for XSL Transformations. This tutorial will teach you how to use XSLT to transform XML documents …

HTML History Since the early days of the World Wide Web, there have been many versions of HTML: ... This tutorial follows the latest HTML5 standard.