A popular scripting language that is widely supported in Web browsers and other Web tools. It adds interactive functions to HTML pages, which are otherwise static, since HTML is a display language, not a programming language. JavaScript is easier to use than Java, but not as powerful and deals mainly with the elements on the Web page.JavaScript uses some of the same ideas found in Java, the compiled object-oriented programming derived from C++. JavaScript code can be imbedded in HTML pages and interpreted by the Web browser (or client).

Answered by Kajal Sharma , an ibibo Master, at 4:53 PM on May 02, 2008

chirag JavaScript is a scripting language most often used for client-side web development. It was the originating dialect of the ECMAScript standard. It is 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.[1][2] The language is best known for its use in websites (as client-side JavaScript) but is also used to enable scripting access to objects embedded in other applications (for example Microsoft Gadgets in the Windows Sidebar).

JavaScript, despite the name, is essentially unrelated to the Java programming language though both have the common C syntax, and JavaScript copies many Java names and naming conventions. The language was renamed from LiveScript in 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 programming language.

"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
for more inf check source http://en.wikipedia.org/wiki/JavaSc ript

Answered by raj u , an ibibo Master, at 4:48 PM on May 02, 2008

java script is design software what ever we do in webpage or game or run software it all works by java / visual basic.generally.

Answered by atul , an ibibo Specialist, at 9:21 AM on May 02, 2008

JavaScript is a scripting language used in many websites. A scripting language is a language, which is easy and fast to learn. So is this reference. A scripting language is interpreted in run-time. It is not compiled like other languages as C++, C#, VB.NET etc. JavaScript is a client side language and it runs on the client browser. Netscape developed it and because of its simplicity it is one of the most known scripting languages. However JavaScript can be also used on the server-side. JavaScript can be used on all most known browsers. It can be easily used to interact with HTML elements. You can validate text fields, disable buttons, validate forms, or change the background color of your page. All this is possible with JavaScript. Like each programming language, it contains variables, arrays, functions, operators, objects and much more which can be help you to create better scripts for your pages. On the server side you can use JavaScript for example to manage your database entry. JavaScript code can be inserted directly in the HTML or you can place it in a separate file with the .js extension and link the web page with the .js file.

For enable JavaScript in browser,please follow the instructions below:
Internet Explorer (6.0)

1. Select 'Tools' from the top menu
2. Choose 'Internet Options'
3. Click on the 'Security' tab
4. Click on 'Custom Level'
5. Scroll down until you see section labled 'Scripting'
6. Under 'Active Scripting', select 'Enable' and click OK

Netscape Navigator (4.8)

1. Select 'Edit' from the top menu
2. Choose 'Preferences'
3. Choose 'Advanced'
4. Choose 'Scripts & Plugins'
5. Select the 'Enable JavaScript' checkbox and click OK

Mozilla Firefox (1.0)

1. Select 'Tools' from the top menu
2. Choose 'Options'
3. Choose 'Web Features' from the left navigation
4. Select the checkbox next to 'Enable JavaScript' and click OK

Mozilla Firefox (1.5)

1. Select 'Tools' from the top menu
2. Choose 'Options'
3. Choose 'Content' from the top navigation
4. Select the checkbox next to 'Enable JavaScript' and click OK

Apple Safari (1.0)

1. Select 'Safari' from the top menu
2. Choose 'Preferences'
3. Choose 'Security'
4. Select the checkbox next to 'Enable JavaScript'

Please keep in mind that upgrading your browser or installing new security software or security patches may affect your JavaScript settings. It is a good idea to double-check that JavaScript is still enabled.

Answered by Nagendra , an ibibo Master, at 7:27 AM on May 02, 2008

JavaScript is a scripting language most often used for client-side web development
Internet Explorer (6.0)
1. Select Tools from the top menu.
2. Choose Internet Options.
3. Click Security.
4. Click Custom Level.
5. Scroll down till you see section labeled Scripting.
6. Under Active Scripting, select Enable and click OK.
Internet Explorer (7.0)
1. Select Tools > Internet Options.
2. Click on the Security tab.
3. Click the Custom Level button.
4. Scroll down to the Scripting section.
5. Select Enable for Active Scripting and Scripting of Java Applets.
6. Click OK.
7. Select YES if a box appears to confirm.
8. Click OK. Close window.
9. Reload page.
6. Under Active Scripting, select Enable and click OK.
Mozilla Firefox (1.0)
1. Select Tools from the top menu.
2. Choose Options.
3. Choose Web Features from the left navigation bar.
4. Select the checkbox next to Enable JavaScript and click OK.
Mozilla Firefox (2.x)
1. Open Firefox.
2. On the Tools menu, click Options.
3. Click Content in the Options list.
4. Under the Content section, check the box next to Enable JavaScript.
5. Click the Advanced button to open the Advanced JavaScript Options box.
6. Check the appropriate boxes under Allow scripts to.
7. Click OK.
8. Click OK.
Apple Safari (1.0)
1. Select Safari from the top menu.
2. Choose Preferences.
3. Choose Security.
4. Select the checkbox next to Enable JavaScript.
Please keep in mind that upgrading your browser or installing new security software or security patches may affect your JavaScript settings.

Answered by jaivir , an ibibo Master, at 5:43 PM on May 01, 2008

hi chirag!
hru!

scripting language most often used for client-side web development. It was the originating dialect of the ECMAScript standard. It is 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.[1][2] The language is best known for its use in websites (as client-side JavaScript) but is also used to enable scripting access to objects embedded in other applications (for example Microsoft Gadgets in the Windows Sidebar).

JavaScript, despite the name, is essentially unrelated to the Java programming language though both have the common C syntax, and JavaScript copies many Java names and naming conventions. The language was renamed from LiveScript in 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 programming language.

"JavaScript" is a trademark of Sun Microsystems..


The following instructions describe how to enable JavaScript in your browser. If your browser isn't listed, please consult its online help pages.

Internet Explorer (6.0)

1. Select Tools from the top menu.
2. Choose Internet Options.
3. Click Security.
4. Click Custom Level.
5. Scroll down till you see section labeled Scripting.
6. Under Active Scripting, select Enable and click OK.

Internet Explorer (7.0)

1. Select Tools > Internet Options.
2. Click on the Security tab.
3. Click the Custom Level button.
4. Scroll down to the Scripting section.
5. Select Enable for Active Scripting and Scripting of Java Applets.
6. Click OK.
7. Select YES if a box appears to confirm.
8. Click OK. Close window.
9. Reload page.

Mozilla Firefox (1.0)

1. Select Tools from the top menu.
2. Choose Options.
3. Choose Web Features from the left navigation bar.
4. Select the checkbox next to Enable JavaScript and click OK.

Mozilla Firefox (2.x)

1. Open Firefox.
2. On the Tools menu, click Options.
3. Click Content in the Options list.
4. Under the Content section, check the box next to Enable JavaScript.
5. Click the Advanced button to open the Advanced JavaScript Options box.
6. Check the appropriate boxes under Allow scripts to.
7. Click OK.
8. Click OK.

Apple Safari (1.0)

1. Select Safari from the top menu.
2. Choose Preferences.
3. Choose Security.
4. Select the checkbox next to Enable JavaScript.

Please keep in mind that upgrading your browser or installing new security software or security patches may affect your JavaScript settings.


source : wikipedia.org

thanks!
take care!

Answered by Aryan Singh , an ibibo Specialist, at 5:16 PM on May 01, 2008

JavaScript is a scripting language most often used for client-side web development.The language is best known for its use in websites but is also used to enable scripting access to objects embedded in other applications.

Answered by Kamlesh B , an ibibo Specialist, at 3:43 PM on May 01, 2008

java script is a program which enable us to view some images which are listed on the web site which requires program support. if you have installed java on yr pc and u want to enable it you need to follow this, open internet explorer click on tools, then internet options then select the advance tab which is on the top right hand side corner scroll down and will see an option java over there and tick the check box and restart the browser, thats it......cheers!

Answered by Ismail , an ibibo Citizen, at 3:30 PM on May 01, 2008

well chirag A popular scripting language that is widely supported in Web browsers and other Web tools. It adds interactive functions to HTML pages, which are otherwise static, since HTML is a display language, not a programming language. JavaScript is easier to use than Java, but not as powerful and deals mainly with the elements on the Web page. On the client, JavaScript is maintained as source code embedded into an HTML page. On the server, it is compiled into bytecode (intermediate language), similar to Java programs.

JavaScript evolved from Netscape's LiveScript language. First released with Navigator 2.0, it was made more compatible with Java. JavaScript does not have the programming overhead of Java, but can be used in conjunction with it. For example, a JavaScript script could be used to display a data entry form and validate the input, while a Java applet or Java servlet more thoroughly processes the information. JavaScript is also used to tie Java applets together. See JScript, Java, Java applet, servlet and VBScript.


to enable for IE
1. Open Internet Explorer.
2. On the Tools menu, click Internet Options.
3. On the Security tab, click Internet.
4. Click Custom Level. (Fig.1)
5. Scroll down to Active scripting.
6. Click Enable (or Prompt). (Fig.2)
7. Click OK.
8. Click Yes.
9. Click OK.

for mozilla
1. Open Mozilla.
2. Select Preferences from the Edit menu.
3. Click the arrow next to Advanced.
4. Click Scripts & Plugins.
5. Check Navigator beneath "Enable Javascript for".
6. Click OK.
7. Click Reload.

Opera 5.X

1. Open Opera.
2. Select Quick Preferences from the File menu.
3. Make sure Enable Javascript is checked.
4. Click Reload.

Opera 7.X

1. Open Opera.
2. Select Quick Preferences from the File menu.
3. Make sure Enable Javascript is checked.
4. Click Reload.

Netscape 4.X

1. Open Netscape.
2. Select Preferences from the Edit menu.
3. Click Advanced.
4. Check both Enable Java and Enable JavaScript
5. Click OK.
6. Click Reload.

Answered by sujata , an ibibo Specialist, at 3:29 PM on May 01, 2008

JavaScript is a scripting language most often used for client-side web development. It was the originating dialect of the ECMAScript standard. It is 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.[1][2] The language is best known for its use in websites (as client-side JavaScript) but is also used to enable scripting access to objects embedded in other applications (for example Microsoft Gadgets in the Windows Sidebar).

JavaScript, despite the name, is essentially unrelated to the Java programming language though both have the common C syntax, and JavaScript copies many Java names and naming conventions. The language was renamed from LiveScript in 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 programming language.

"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.[3]avaScript was originally developed by Brendan Eich of Netscape under the name Mocha, later LiveScript, and finally renamed 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 of 1995. The naming has caused confusion, giving the impression that the language is a spin-off of Java, and 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.[4][5]

Microsoft named its dialect of the language JScript to avoid trademark issues. JScript was first supported in Internet Explorer version 3.0, released in August 1996 and included Y2K compliant date functions, unlike those based on java.util.Date in JavaScript at the time. The dialects are perceived to be so similar that the terms "JavaScript" and "JScript" are often used interchangeably (including in this article). 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.[6]

[edit] Features

[edit] Structured programming

JavaScript supports all the structured programming syntax in C, e.g. if statements, while loops, switch statements, etc. One partial exception is scoping: C-style block-level scoping is not supported. However, JavaScript 1.7 supports block-level scoping with the let keyword.

[edit] Dynamic programming

dynamic typing
As in most scripting languages, types are associated with values, not variables. For example, a variable x could be bound to a number, then later rebound to a string. JavaScript supports various ways to test the type of an object, including duck typing.
objects as associative arrays
JavaScript is heavily object-based. Objects are associative arrays, such that object property names are associative array keys. obj.x = 10 and obj["x"] = 10 are equivalent, the dot notation being merely syntactic sugar. Properties and their values can be added, changed, or deleted at run-time. The properties of an object can also be enumerated via a for...in loop.
interpreted
Conforming JavaScript engines must be able to interpret (as opposed to compile) source code. This allows JavaScript to include an eval function.

[edit] Function-level programming

first-class functions
Functions are first-class; they are objects themselves. As such, they have properties a

Answered by Mohd Farooq , an ibibo Master, at 3:28 PM on May 01, 2008