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JavaScript

Wikipedia JavaScript

JavaScript (/ˈdʒɑːvəˌskrɪpt/[5]) is a high-level, dynamic, untyped, and interpreted programming language.[6] It has been standardized in the ECMAScript language specification.

JavaScript is prototype-based with first-class functions, making it a multi-paradigm language, supporting object-oriented,[8] imperative, and functional programming styles.[6] It has an API for working with text, arrays, dates and regular expressions, but does not include any I/O, such as networking, storage or graphics facilities, relying for these upon the host environment in which it is embedded.[7]

NOTE: 上面描述的JavaScript的核心特性，这些核心特性是非常有价值的。

JavaScript是依赖于它的runtime的。

JavaScript is also used in environments that are not web-based, such as PDF documents, site-specific browsers, and desktop widgets. Newer and faster JavaScript virtual machines (VMs) and platforms built upon them have also increased the popularity of JavaScript for server-side web applications. On the client side, JavaScript has been traditionally implemented as an interpreted language, but more recent browsers perform just-in-time compilation. It is also used in game development, the creation of desktop and mobile applications, and server-side network programming with runtime environments such as Node.js.