September 2007
Intermediate to advanced
241 pages
5h 45m
English
book
Accelerated DOM Scripting with Ajax, APIs, and Libraries
by Jonathan Snook, Aaron Gustafson, Stuart Langridge, Dan Webb
Content preview from Accelerated DOM Scripting with Ajax, APIs, and Libraries
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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.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.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.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.
CHAPTER 7Form Validation and JavaScript
By Stuart Langridge
Most web applications use the <form> tag at one place or another. If your app uses a <form> to gather information, you'll probably want to try and validate that information to make sure that what the user is filling in is reasonable in some way. Hence the convention that an * next to a bit of a form means "this part is mandatory; you must fill it in." It's equally important that if you want the information you receive to be in a certain format you have your app enforce that format. This is what validation is all about: having your app check what the user types to confirm that it's what you were expecting. If you're asking users for the number of chickens they own, it's a good idea to ...
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