JavaScript Explained: From Basics to Data Types and Variables.

WHAT IS JAVASCRIPT? •JavaScript (JS) is a lightweight interpreted (or just-in-time compiled ) programming language with first-class functions. •It is most well-known as the scripting language for Web pages. •Many non-browser environments also use it, such as Node.js, Apache CouchDB and Adobe Acrobat. •It is used for interact web application and supports both client side and server side development. •Client side means code runs on the user's computer and server side means it's runs on the web browser. •JavaScript is a single-threaded language that executes one task at a time. ⇒ What is Just-In-Time Compilation (JIT) JIT (Just-In-Time Compilation) is a compilation process in which code is translated from an intermediate representation or a higher-level language (e.g., JavaScript or Java bytecode) into machine code at runtime, rather than prior to execution. This approach combines the benefits of both interpretation and ahead-of-time (AOT) compilation. ⇒ What is Scripting Language? A scri