JavaScript

What is JavaScript?

JavaScript is a scripting language, originally implemented in web browsers, but now widely used server-side via the Node.js platform. It supports a runtime system based on numerical, Boolean and string values, with built-in, first-class support for dictionary and array types. It is object-oriented requiring no distinction between types of objects and has a prototype-based object model (vs. a class-based object model). This allows for dynamic inheritance where inheritance can vary for individual objects. In JavaScript, functions can be written without special declarative requirements such as type annotations.