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  Tutorial: AJAX Database Example

In the AJAX example below we will demonstrate how a web page can fetch information from a database using AJAX technology.

Tutorial Details:

AJAX Example Explained
The example above contains a simple HTML form and a link to a JavaScript:


Select a Customer:



Customer info will be listed here.



As you can see it is just a simple HTML form with a simple drop down box called "customers".The paragraph below the form contains a div called "txtHint". The div is used as a placeholder for hints retrieved from the web server.
When the user selects data, a function called "showCustomer()" is executed. The execution of the function is triggered by the "onchange" event. In other words: Each time the user change the value in the drop down box, the function showCustomer is called.


 

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