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About:
JavaScript is a scripting language used to enable programmatic access to objects within other applications. It is primarily used in the form of client-side JavaScript for the development of dynamic websites.
JavaScript is a dialect of the ECMAScript standard and is characterized as a dynamic, weakly typed, prototype-based language with first-class functions.
JavaScript was influenced by many languages and was designed to look like Java, but be easier for non-programmers to work with.
JavaScript, despite the name, is essentially unrelated to the Java programming language, although both have the common C syntax, and JavaScript copies many Java names and naming conventions.
The language's name is the result of a co-marketing deal between Netscape and Sun, in exchange for Netscape bundling Sun's Java runtime with their then-dominant browser.
The key design principles within JavaScript are inherited from the Self and Scheme programming languages.
"JavaScript" is a trademark of Sun Microsystems. It was used under license for technology invented and implemented by Netscape Communications and current entities such as the Mozilla Foundation.
History:
JavaScript was originally developed by Brendan Eich of Netscape under the name Mocha, which was later renamed to LiveScript, and finally to JavaScript.
The change of name from LiveScript to JavaScript roughly coincided with Netscape adding support for Java technology in its Netscape Navigator web browser.
JavaScript was first introduced and deployed in the Netscape browser version 2.0B3 in December 1995. The naming has caused confusion, giving the impression that the language is a spin-off of Java,
and it has been characterized by many as a marketing ploy by Netscape to give JavaScript the cachet of what was then the hot new web-programming language.
Due to the widespread success of JavaScript as a client-side scripting language for web pages, Microsoft developed a compatible dialect of the language, naming it JScript to avoid trademark issues.
JScript added new date methods to fix the non-Y2K-friendly methods in JavaScript, which were based on java.util.Date.[2] JScript was included in Internet Explorer 3.0, released in August 1996.
The dialects are perceived to be so similar that the terms "JavaScript" and "JScript" are often used interchangeably. Microsoft, however, notes dozens of ways in which JScript is not ECMA compliant.
Netscape submitted JavaScript to Ecma International for standardization resulting in the standardized version named ECMAScript.
The flexibility of JavaScript has made it one of the most popular programming languages on the web and also one of the easier languages to learn. Initially, however,
many professional programmers denigrated the language because its target audience was web authors and other such "amateurs", among other reasons. The advent of AJAX returned
JavaScript to the spotlight and brought more professional programming attention. The result was a proliferation of comprehensive frameworks and libraries,
improved JavaScript programming practices, and increased usage of JavaScript outside of the web.
reference by wikipedia.org
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