Javascript - Web Tools For The Digital World

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Transcript Javascript - Web Tools For The Digital World 

JAVASCRIPT
Pam Kahl | COM 585 | Spring 2010
What It Is

JavaScript is:

Considered the scripting language for the web
Client-side scripting language for web pages
 Is to the browser what ASP and PHP are to servers

Relatively easy to use
 Underlying functionality for HTML-based programs

Adobe Reader
 Adobe Dreamweaver CS3

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Dialect of ECMAScript


JavaScript, Jscript, ActionScript
Not Java
History


Developed by Brendan Eich @ Netscape
Mocha!
 no
wait . . . LiveScript!
 no really . . . JavaScript!



Launched Dec 1995, NS v2.0
Marketing partnership with Sun
Renaissance thanks to Ajax
What It Does

Basic functionality
 Text,

pop up boxes, contextual content
Enhances dynamics and interactive features
 Calculations
 Interactive
games
 Security passwords
 Cookies
Examples
<html>
<body>
<script type="text/javascript">
document.write("Hello World!");
</script>
Hello World!
=
</body>
</html>
http://www.w3schools.com/js/tryit.asp?filename=tryjs_alert
http://www.w3schools.com/js/tryit.asp?filename=tryjs_imagemap
http://www.w3schools.com/js/tryit.asp?filename=try_dom_window_resi
zeto
Why Important



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For non-programmers
Enables engaging site functionality
Cookies allow for customized experiences
Easy to update