Summary: Press Start

Key points

• An algorithm is a set of step-by-step instructions that complete a specific task.

• Pseudocode is used to write programs without using a specific programming language.

• JavaScript was created in 1995 and is considered to be the language of the Web.

• JavaScript’s main environment is the browser, but it can also run in other environments.

• Each version of JavaScript has to be backward compatible with older versions.

• Code should be easy to read and regularly refactored to keep it running smoothly.

• Remember the DRY principle when coding. Don’t Repeat Yourself!