When did javascript come out?

Javascript was released in 1995; JavaScript is a high-level, interpreted programming language. It is a language based on prototypes and first-class functions. It is a multi-paradigm language that supports object-oriented programs. Design, imperative programming, and functional programming.

The operating environment of this article: Windows 7 system, javascript version 1.8.5, DELL G3 computer

When was javascript released?

In 1993, the National Center for Supercomputer Applications (NCSA) released NCSA Mosaic, the earliest popular graphical interface web browser, which played an important role in the popularization of the World Wide Web.

In 1994, the main developers of Mosaic immediately founded Netscape Company and hired many of the original NCSA Mosaic developers to develop Netscape Navigator. The company's goal was to replace NCSA Mosaic as the world's number one web page browser. Within four months, it had captured three-quarters of the browser market and became the dominant browser on the Internet in the 1990s. Netscape foresaw the need for the web to become more dynamic. The company's founder, Marc Andreessen, believed that HTML needed a glue language that web designers and part-time programmers could easily use to assemble components such as images and plug-ins, and the code could be written directly in web page markup.

In 1995, Netscape recruited Brandon Ek with the goal of embedding the Scheme language into the Netscape Navigator browser. But earlier, Netscape had cooperated with Sun to support Java in Netscape Navigator. At this time, there was a fierce debate within Netscape. Later, Netscape decided to invent an auxiliary scripting language that could be used with Java and have a similar syntax. This decision ruled out the use of existing languages ​​​​such as Perl, Python, Tcl or Scheme. To defend the idea of ​​JavaScript among other competing proposals, the company needed a working prototype.

Ike designed the prototype in just ten days in May 1995.

Originally named Mocha, it was renamed LiveScript in the Beta version of Netscape Navigator 2.0 in September 1995. In December of the same year, it was renamed JavaScript when deployed in Netscape Navigator 2.0 Beta 3. At that time, Netscape and In order to make this language catch up with the "hot word" of Java, a programming language, the development alliance formed by Sun Microsystems temporarily changed its name to JavaScript. In the future, this became one of the reasons why the public had many misunderstandings about this language.

Introduction to javascript:

JavaScript (often abbreviated as JS) is a high-level, interpreted programming language. JavaScript is a language based on prototypes and first-class functions. It is a multi-paradigm language that supports object-oriented programming, imperative programming, and functional programming. It provides syntax to manipulate text, arrays, dates, regular expressions, etc. It does not support I/O, such as network, storage and graphics, but these can be supported by its host environment. It has been standardized as a language by ECMA (European Computer Manufacturers Association) through ECMAScript [8]. It is used by most websites in the world and 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) [9]. In terms of grammatical structure, it has many similarities with the C language (such as if conditional statements, switch statements, while loops, do-while loops, etc.).

On the client side, JavaScript has been implemented as an interpreted language in the traditional sense, but more recently, it has been compiled for just-in-time (JIT) execution. With 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.

Recommended study: "javascript basic tutorial"

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