March 2006
Beginner to intermediate
448 pages
13h 33m
English
Content preview from Head Rush Ajax
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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.
198
Chapter 3
all is right with the world
Change that baby back to asynchronous!
Don’t forget to change sendRequest(), in coffee.js, back to the
asynchronous version... nobody wants to wait around on their caffeine x.
Two coffee makers, asynchrony, and
one jittery, wired, happy office.
you’re on your way 4
199
asynchronous applications
60 Second Review
™ Synchronous requests wait for a response
from the server before anything else is
allowed to happen.
™ Asynchronous requests don’t wait for a
response, so users can keep pounding
away at an asynchronous application while a
request is being handled.
™ A lot of Ajax applications are asynchronous,
but when a web server returns a response
quickly, it really doesn’t matter whether the
app is asynchronous or not.
™ Asynchronous applications work best when
the server takes a while to send a response
back, or when users need to do several
things at one time on a web page or form.
™ When you call a request object’s open()
method, the third parameter tells the request
whether or not it’s asynchronous. A value of
“true” means asynchronous; “false” means
synchronous.
™ The DOM allows you to change a web page
without reloading the page.
™ The innerHTML property is deprecated, and
isn’t as safe or stable an approach as using
the DOM to change a web page ...
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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.
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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.