Definition of JavaScript

JavaScript is an interpreted programming or script language from Netscape. It is somewhat similar in capability to Microsoft'sVisual Basic, Sun's Tcl, the UNIX-derived Perl, and IBM's Rexx. In general, script languages are easier and faster to code in than the more structured and compiled languages such as C and C++. Script languages generally take longer to process than compiled languages, but are very useful for shorter programs.

JavaScript is a client-side programming language (meaning it's run on the user's computer, rather than the site's server). It is used to program advanced behaviors into a website, such as slideshows and other graphical frills. Because some users disable JavaScript on their browsers, nothing crucial to the site's functioning should be programmed in JavaScript.

JavaScript is used in Web site development to do such things as:
Automatically change a formatted date on a Web page
Cause a linked-to page to appear in a popup window
Cause text or a graphic image to change during a mouse rollover


Author: Pal (Parthiv) Patel24 Jul 2010 Member Level: Gold   Points : 0

Thanks dude for your good definition.

its too good.

Author: ketan Italiya09 Oct 2013 Member Level: Gold   Points : 4

Like Java, this is a programming lanuguage designed by Sun Microsystems, in conjuction with Netscape, that can be integrated into standard HTML pages. While JavaScript is based on the Java syntax, it is a scripting language, and therefore cannot be used to create stand-alone programs. Instead, it is used mainly to create dynamic, interactive Web pages. For example, Web developers can use JavaScript to validate form input, create image rollovers, and to open those annoying pop-up windows. Like so many other things, we have to take the good with the bad.

Author: Phagu Mahato17 Oct 2013 Member Level: Gold   Points : 8

What is JavaScript?
JavaScript is scripting language used for consumer facet scripting. JavaScript developed by Netscape in 1995 as a way for substantiating forms and providing interactive content to internet site. Microsoft and Netscape introduced JavaScript support in their browsers.. Javascript will move with HTML ASCII text file, facultative net authors to boost their sites with dynamic content. JavaScript is supported by variety of code firms ANd is an open language that anyone will use while not getting a license. it's supported by recent browsers from Netscape and Microsoft, although net person supports solely a set, that Microsoft calls JavaScript.
Java Script could be a program scripting language developed by Netscape for its Navigator and individual World-Wide net browsers. Microsoft has developed a compatible language, referred to as J-Script, for its net person browser.

While the syntax of the Java Script programing language resembles that of Java, the 2 languages are literally unrelated. Java Script ASCII text file is embedded in HTML documents, and is taken by a World-Wide applications program. Java ASCII text file is compiled into a byte code, keep in a very separate file, that the World-Wide applications program downloads And executes singly from an HTML page.

Benefits of JavaScript
Following area unit the advantages of JavaScript.

associative arrays
loosely written variables
regular expressions
objects and categories
extremely evolved date, math, and string libraries
W3C DOM support within the JavaScript

Disadvantages of JavaScript

Developer depends on the browser support for the JavaScript
there's no thanks to hide the JavaScript code just in case of business application

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