A Guide to Python Lambda Functions, with Examples

Learn the different ways you can use the spread operator in JavaScript, and the main difference between the spread and rest operators.

Explore some of the missing math methods in JavaScript — such as sum, product, factorial, odd and even — and how to write functions for them.

Learn four simple ways to horizontally and vertically center a div (or any other element) using CSS Grid, with fully interactive demos.

Learn what you can do with the built-in JavaScript Math object, which includes useful functions for performing mathematical operations.

In this quick JavaScript regex matching guide, you'll learn how to test if a string matches a regular expression using the test() method.

Learn how HTTP web requests are structured, and how to make a Python request — with the help of the Python requests library.