Announcements: Fri 18 May

• Follow the web directions on the JavaScript assignment. (No onMouseOver event handlers are required.)

• Quiz on Monday: functions, JavaScript, HTML forms, copyright

• JavaScript assignment is due Wednesday

• Next week’s sections deal with Excel assignment

• Lecture notes for JavaScript 1 and 2 are posted.

JavaScript 2:
towards an active, adaptive, Web

Jonathan Nelson

Cog Sci 3

Spring 2001

The vision

• The information you want

• When you want it

A paper

• “Good morning Jonathan”

• “La Jolla weather is mostly sunny, 65 degrees”

• “Surf is 3 ft; water pollution is moderate.”

• “Mexican parliament is debating indigenous rights bill.”

• (Not sports)

• (Not NY weather)

An art company:
Monet, DaVinci, porn, or Picasso?

• Who is surfing?

– What have they clicked on before?

– How much money do they have?

• What is their physiological state?

– happy? sad?

– sexually aroused?

– physiologically aroused?

– what are they looking at?

Why not HTML?

• Everybody sees the same thing, no matter:

– where they live

– the time of day

– what they’re interested in

– how much money they have

• The bottom line: in real applications,
you can’t hard code everything

DHTML

• Dynamic

• Adaptive

• Personalized

Types of DHTML

• Java

• server-side ASP, JSP, and Perl

• Client-side JavaScript / HTML forms

– easy to learn

– standardized implementation

Illustrative uses of DHTML

• select your seat on a flight

• randomize order of study questions

• random image

• pages that write themselves