AJAX in APEX


Originally posted on iAdvise blog:

AJAX is becoming important in the world of web applications. APEX has provided us a very easy way to create an AJAX process, by using dynamic actions. Using PL/SQL Actions in Dynamic Actions to communicate with the database without submitting the page will suffice in most cases, but the downside is that the code is not very re-usable, and when you want to write a plug-in you simply don’t have access to Dynamic Actions. In this blog you will learn how to code your own AJAX process.

An AJAX process in APEX consists out of three parts

  • The JavaScript code that calls the AJAX PL/SQL Process
  • The PL/SQL Process that might or might not return a value
  • The JavaScript code that catches the return value and possibly does something with it

In APEX there are three ways to create an AJAX process from JavaScript:

  • The htmldb_get() method: undocumented but this…

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