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Python Examples Learn by examples! This tutorial supplements all explanations with clarifying examples. See All Python Examples

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

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 …

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

Click on the "Run example" button to see how it works. We recommend reading this tutorial, in the sequence listed in the left menu. C++ is an object oriented language and some concepts may …

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

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

This tutorial follows Bootstrap 3, which was released in 2013. However, we also cover newer versions; Bootstrap 4 (released 2018) and Bootstrap 5 (released 2021).

Python For Loops A for loop is used for iterating over a sequence (that is either a list, a tuple, a dictionary, a set, or a string). This is less like the for keyword in other programming languages, …