July 2008
Beginner
356 pages
6h 8m
English
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Exercises
Use the canvas example to practice. Try out different things, for example:
- Draw some triangles, squares, and rectangles.
- Add constructors for more shapes, such as Trapezoid, Rhombus, Kite, Diamond, and Pentagon. If you want to learn more about the canvas tag, create a Circle constructor too. It will need to overwrite the
draw()method of the parent. - Can you think of another way to approach the problem and use some other type of inheritance?
- Pick one of the methods that uses
uberas a way for a child to access its parent. Add functionality where the parents can keep track of who their children are. Perhaps by using a property that contains achildrenarray?
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.