simple example AJAX that work with jsp that check value entered by the user from the database and give alert message

Where can I refer for simple AJAX example that work with jsp that check value from the database.
Do I have to call another jsp page to make ajax work? can it be on the same jsp page?
how can I check the value that is returned and display the alert message if the value entered does not exist
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Yap_YokeWanAuthor Commented:
can ajax works without having to call another jsp page if we want to chk the value from db?
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Mayank SAssociate Director - Product EngineeringCommented:
Yes it can talk to something else on the server directly like a Servlet.
Yap_YokeWanAuthor Commented:
is there any example that works as u mentioned (simple for reference)
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