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Timers, Images, Sniffing and Validation

• Lecture slides powerpoint (700k)

Examples for lecture 2

• xmasTimer.html - using a timer
• quickQuiz.html - test your understanding of setTimeout
• rollover.html - preloading rollover images
• navigator.html - interrogating the navigator object
• walkingDog.html - simple animation using image replacement with some browser sniffing
• prairieDog.html - more animation with styles and browser sniffing
• prairieDogDomSniff.html - alternative handling of browser variation
• mailingList.html - form validation
• loginForm.html - more form validation
• ajax.html - AJAX form validation

Tutorial exercises

Remember that these exercises are an important part of the course, are relevant to your coursework and and may be relevant to the exam!

• Try these exercises, you may find the JavaScript console helpful
• Try reading this (rather long) interactive article

Resources for the tutorial exercises

• tut2-1.html - colour changing page for exercise 1
• tut2-2.html - blue tiles for exercise 2
• Mozilla browser sniffer reference for exercise 4
• Venkman - JavaScript debugger from Mozilla

Some tutorial answers

before you follow these links it is probably a good idea that you at least make some attempt to solve the tutorial questions yourself

• exercise 1
• exercise 2 kindy provided by Jonathan
• exercise 3

Web resources

You really do need to follow these links. Remember that it is not so important to know stuff as to know where to find it.

• JavaScript Documentation from Netscape now hosted by Mozilla
• GPL JavaScript calendar
• Other links for JavaScript

best viewed using Mozilla browsers
© k.mcmanus 2004