How can a dynamic action using JS be used in Oracle Apex to activate/deactivate an item?

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To activate/deactivate an item in Oracle Apex using dynamic action using JS, follow the steps below:

1. On the page designer, select the item that needs to be activated/deactivated.

2. Click on the 'Create Dynamic Action' button.

3. In the 'Create Dynamic Action' dialog box, enter a name for the dynamic action.

4. Under 'When Event Occurs' select the event that should trigger the dynamic action.

5. Under 'True Action' click on the 'Add' button and select 'Execute JavaScript Code' from the list of actions.

6. In the 'Execute JavaScript Code' dialog box that appears, enter the following code snippet to activate or deactivate the item:

   $s('ITEMNAME', 'VALUETO_SET');

   Replace 'ITEMNAME' with the name of the item and 'VALUETO_SET' with the value that you want to set for the item.

   To activate the item, set the value to 'show' and to deactivate the item, set the value to 'hide'.

7. Click on the 'OK' button to save the dynamic action.

8. Run the page and test the dynamic action by triggering the event that you selected in step 4. The item should be successfully activated/deactivated based on the code that you entered in step 6.