10-11-2012, 10:44 AM
Introduction to JavaScript
javascript.ppt (Size: 90.5 KB / Downloads: 233)
What is JavaScript?
Browsers have limited functionality
Text, images, tables, frames
JavaScript allows for interactivity
Browser/page manipulation
Reacting to user actions
A type of programming language
Easy to learn
Developed by Netscape
JavaScript Allows Interactivity
Improve appearance
Especially graphics
Visual feedback
Site navigation
Perform calculations
Validation of input
Other technologies
How Does It Work?
Embedded within HTML page
View source
Executes on client
Fast, no connection needed once loaded
Simple programming statements combined with HTML tags
Interpreted (not compiled)
No special tools required
Learning JavaScript
Special syntax to learn
Learn the basics and then use other people's (lots of free sites)
Write it in a text editor, view results in browser
You need to revise your HTML
You need patience and good eyesight!