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Javascript was developed in 1995; JavaScript is a high-level, interpretive programming language, a language based on prototypes and first-class functions, and a multi-paradigm language that supports object-oriented programming, instruction programming, and functional programming.

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

In 1993, the national supercomputer Tencent App Center (NCSA) published NCSA Mosaic, the earliest popular graphical interface web browser, which played an important role in the popularity of the World wide Web.

In 1994, the main developers of Mosaic immediately founded Netscape and hired many former NCSA Mosaic developers to develop Netscape Navigator. The company aims to replace NCSA Mosaic as the world's number one web browser. In four months, it has occupied 3/4 of the browser market and became the main browser of the Internet in the 1990s. Netscape foresees the need for the network to become more dynamic. Mark Anderson, the company's founder, believes that HTML needs a glue language that web designers and part-time programmers can easily use to assemble components such as images and plug-ins, and the code can be written directly in web tags.

In 1995, Netscape recruited Brandon Ike with the goal of embedding the Scheme language into Netscape Navigator browsers. But earlier, Netscape had already partnered with Shenyang to support Java in Netscape Navigator, and there was a heated debate within Netscape. Netscape later decided to invent an auxiliary scripting language that works with Java and was somewhat similar in syntax, which led to the exclusion of existing languages, such as Perl, Python, Tcl, or Scheme. To defend the idea of JavaScript in other competitive proposals, the company needs a working prototype.

It took Ike only ten days to design the prototype in May 1995.

Originally named Mocha, it was renamed LiveScript in the Beta version of Netscape Navigator 2.0 in September 1995, and was renamed to JavaScript when it was deployed in Netscape Navigator 2.0 Beta 3 in December of the same year. At that time, the development alliance formed by Netscape and Shenyang computer Company in order to match the language with the "hot word" of Java programming language, so it was temporarily renamed JavaScript, which later became one of the reasons for many misunderstandings about the language.

Introduction to javascript:

JavaScript (usually abbreviated to JS) is a high-level, interpreted programming language. JavaScript is a prototype-based, first-class function language, is a multi-paradigm language, it 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.

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