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This article mainly introduces what javascript means, has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, the following let the editor take you to understand it.

Javascript is a high-level, interpretive programming language, a language based on prototypes and first-class functions, and a multi-paradigm language. It supports object-oriented programming, instruction programming and functional programming.

This article operating environment: Windows7 system, javascript1.8.5 version, DELL G3 computer

JavaScript (usually abbreviated to JS) is a high-level, interpreted programming language [8]. JavaScript is a prototype-based, first-class function language [9]. It is a multi-paradigm language that supports object-oriented programming, instruction programming, and functional programming. It provides syntax to manipulate text, arrays, dates, regular expressions, etc., and does not support Imax O, such as network, storage, graphics, etc., but these can be supported by its hosting environment. It has been standardized by ECMA (European Association of computer Manufacturers) through ECMAScript. It is used by most websites in the world, and it is also supported by the world's mainstream browsers (Chrome, IE, Firefox, Safari, Opera).

JavaScript and Java have many similarities in name or syntax, but the two programming languages are very different from the beginning of their design. The language design of JavaScript is mainly influenced by Self (a prototype-based programming language) and Scheme (a functional programming language). It also has many similarities with C language in syntax structure (such as if conditional statement, switch statement, while loop, do-while loop, etc.).

On the client side, JavaScript is traditionally implemented as an interpreted language, but recently it has been able to be executed by just-in-time compilation (JIT). With the introduction of the latest HTML5 and CSS3 language standards, it can also be used for the development of games, desktop and mobile applications and running in server-side network environments such as Node.js.

The basic features of JavaScript are as follows:

Is an interpretive scripting language (the code is not precompiled).

It is mainly used to add interactive behavior to HTML pages.

You can embed a HTML page directly, but writing it as a separate js file facilitates the separation of structure and behavior.

JavaScript is commonly used to accomplish the following tasks:

Embed dynamic text into HTML pages

Respond to browser events

Read and write HTML elements

Validate data before it is submitted to the server

Detect the browser information of the visitor

Control cookie, including creation and modification, etc.

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