📌Track Active Tab switch in Region Display Selector without any plugins

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🚩Introduction 

  • In Oracle APEX applications, Region Display Selector components helps to organize multiple regions efficiently. However, APEX does not provide a built-in declarative option to detect which tab is active when users switch between them, making it challenging to trigger conditional logic based on tab selection.

  • This can be solved by creating the custom dyanamic action to capture the tab change. This approach enables dynamic actions like refreshing regions or executing custom logic whenever a tab becomes active, without requiring any plugins.

📑Why It is Essential to Track Tab Selection in Region Display Selector

In APEX applications, pages often organize multiple regions under a Region Display Selector to separate content like Details, History, or Reports. While this improves layout, users actions on different tabs often require specific logic to run, such as refreshing a region, loading dynamic content, or updating page items. Without capturing which tab is active, developers cannot reliably trigger these actions.

  • Execute custom logic when a specific tab is selected

  • Refresh only the relevant region instead of the entire page

  • Control dynamic content and page items efficiently

  • Enhance user experience by responding precisely to tab navigation

  • Build enterprise-ready, interactive tabbed interfaces without plugins 

👉 Steps to Detect Tab Changes in Region Display Selector

We can trigger an event when the tabs changes in the region display selector by creating the click event in dynamic action without any plugins. We can see how to achieve this in the following steps.  

Step 1: 

In the page designer, create region and select the type as Region Display Selector  and create multiple regions under that. 


In each region, click the property Region Display Selector under the Advanced section.

Step 2: 

Create the Dynamic action with the following things: 

                          Event                  :   Click                           

                          Selection Type   :   jQuery Selector

                          jQuery Selector :  .apex-rds a    // copy and paste this jquery selector

Step 3: 

Create true action of type Execute Javascript Code and under that copy the below javascript code to get the reference of tab which is clicked. Using this reference, you can write your own custom business logic required for your application.

var rdsSelected = $(this.triggeringElement).find("span").text();
alert(rdsSelected); // This will show the current active tab name

Step 4: 

Now save the page and run the application, on clicking each tab,  custom dynamic action will be triggered and your defined logic will be executed.




🔥 Conclusion

Thus, capturing the active tab reference in an Oracle APEX Region Display Selector can be achieved by creating click event dynamic action without any plugins. This enables developers to run dynamic actions, refresh specific regions, or execute custom logic whenever a tab is selected, enhancing usability and providing a more responsive, enterprise-ready interface without relying

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