What are the different versions of JavaScript?

js versions are: 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.8.1, 1.8.2, 1.8.5. The version of JS refers to the ECMAScript standard followed by the running environment for executing JavaScript. The initial JS version is 1.0.

The operating environment of this tutorial: windows7 system, javascript version 1.8.5, Dell G3 computer.

JavaScript was first designed and implemented on the Netscape Navigator browser in 1995 by Brendan Eich of Netscape. Because Netscape was working with Sun, Netscape management wanted it to look like Java, hence the name JavaScript. But in fact its grammatical style is closer to Self and Scheme.

JavaScript version:

Basic features of JavaScript:

JavaScript is a scripting language that belongs to the Internet and has been widely used on the Web Application development is often used to add various dynamic functions to web pages to provide users with smoother and more beautiful browsing effects. Usually JavaScript scripts realize their functions by embedding them in HTML.

• is an interpreted scripting language (the code is not precompiled).

• is mainly used to add interactive behaviors to HTML (an application under Standard Universal Markup Language) pages.

• It can be directly embedded in HTML pages, but writing it as a separate js file is beneficial to the separation of structure and behavior.

• Cross-platform features, with the support of most browsers, can run on multiple platforms (such as Windows, Linux, Mac, Android, iOS, etc.).

Javascript scripting language, like other languages, has its own basic data types, expressions and arithmetic operators, and the basic program framework of the program. Javascript provides four basic data types and two special data types for processing data and text. Variables provide a place to store information, and expressions can complete more complex information processing.

[Recommended learning: javascript advanced tutorial]

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