AJAX: A Beginner's Guide (Beginner's Guide (Osborne Mcgraw by Steven Holzner

By Steven Holzner

This can be extra of a reaction to the former comment. The code in query is located at the publishers web site (listed at the again cover). simply look for "ajax". it truly is at the left hand part lower than "Downloads". For ease, i have integrated the hyperlink. http://www.mhprofessional.com/product.php?isbn=0071494294

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Additional info for AJAX: A Beginner's Guide (Beginner's Guide (Osborne Mcgraw Hill))

Sample text

To the web page. So, can we do that with the following code? "); }

Using JavaScript functions

Unfortunately not. The display function will indeed be called after the body of the page loads—when the user clicks the button—and that’s fine. But there’s a catch. write method, because the document is considered closed. ” message because the “Using JavaScript functions” header will have been overwritten.

Script>

Using JavaScript functions

31 32 Ajax: A Beginner’s Guide

So how can you address the targetDiv element in the JavaScript code in the display function? getElementById. write("Here is the text")). getElementById('targetDiv'). This method call returns an object corresponding to the targetDiv

element—when a method or function returns data, you get access to that data.

And now you can drag and drop on the Web as well, thanks to Ajax, which is used behind the scenes to inform the server where you dropped what you were dragging. Figure 1-10 shows an Ajax-enabled drag-and-drop Internet application called Mosaic. The idea is that you and other people can drag and drop tiles to create a shared work of art. com/mosaic. As you can see, you can do a lot with Ajax, just by sending text and XML back and forth to and from the server behind the scenes. It’s just too bad you’re limited to working with text and XML—wouldn’t it be great if you could download images behind the scenes?

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