Introduction to JavaScript

Here are a few things you can do with JavaScript:

• Validate forms at the client-side saving both the precious server resources and time.
• Create mouseover effects, change background color of a document with a click of a button… interactivity!
• Randomly display content without the involvement of server programs.
• Move HTML elements around pages.
• Change page contents dynamically.
• Load content in new browser windows and frames.
• Make online games.

JavaScript is not the same as Java. 

Although the names are much alike, JavaScript is primarily a scripting language for use within HTML pages, while Java is a real programming language that does quite different things from JavaScript. In addition Java is much harder to learn.

Java, developed under the Sun Microsystems brand, is a full-fledged object-oriented programming language. It can be used to create standalone applications and a special type of mini application, called an applet. Applets are downloaded as separate files to your browser alongside an HTML document, and provide an infinite variety of added functionality to the Web site you are visiting. The displayed results of applets can appear to be embedded in an HTML page (e.g., the scrolling banner message that is so common on Java-enhanced sites), but the Java code arrives as a separate file. (more…)

The JavaScript was invented by Brendan Eich at Netscape (with Navigator 2.0), and has appeared in all Netscape and Microsoft browsers since 1996.JavaScript’s official name is “ECMAScript”. The standard is developed and maintained by the ECMA organisation. 

In the early 1990s when the World Wide Web was first created all web pages were static. When you viewed a web page you saw exactly what the page was set up to show you and there was no way for you to interact with the page. (more…)

Javascript is a scripting language. It  is an easy-to-use programming language that can be embedded in the header of your web pages. It can enhance the dynamics and interactive features of your page by allowing us to perform calculations, check forms, write interactive games, add special effects, customize graphics selections, create security passwords and more.