free ebook and tutorial - AJAX and Connection Manager

As far as web interface design techniques are concerned, AJAX is definitely the way to go. So what JavaScript library worth its salt these days wouldn't want to include a component dedicated to this extremely useful and versatile method of client/server communication?
The Connection Manager utility is by no means the smallest, most light-weight component included with the YUI, but it's certainly not the largest either, yet it packs so much functionality into just 12Kb (for the–min version).

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