Section 11.5. Summary


11.5. Summary

In this chapter's use case, we focused on submitting forms over AJAX and then updating parts of the document using the returned information. You can implement this pattern in many different ways, but it's common to use a library's AJAX form submission features to do so. This form submission feature is especially powerful if the library supports adding JavaScript to the page along with HTML when doing the update. Be careful when deciding which parts of a page to upgrade with AJAX in this fashion; if you start making one form update many different parts of a page, you can make it hard for a user to see what is happening. Thus, this updating strategy actually works best for self-contained actions or for those that seem related. Even in related cases, you may want to add some visual effects, such as highlighting the changed elements, to make it clear that something has happened.

The page segmenting pattern can be especially useful in cases where you need to look up information while completing another form. This could be anything from selecting a billing address on a shopping cart to selecting a permissions group in a user editor. When designed correctly, you can often package these components in your server-side framework in such a way that they can be reused without your having to write any JavaScript for their subsequent uses. In the next chapter's use case, we look at some other reusable components and how standard ones can be combined to build a small application.




Understanding AJAX(c) Using JavaScript to Create Rich Internet Applications
Understanding AJAX: Using JavaScript to Create Rich Internet Applications
ISBN: 0132216353
EAN: 2147483647
Year: N/A
Pages: 154

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