Oracle APEX - how to show an item on page load based on the value of another item - oracle-apex-5.1

Question

I have an item on the page which I want to show/hide on page load based on the value of another item. If item2 is Yes, then show item1, or if item2 is No, then hide item1.
I know how to do that using dynamic action and javascript but I want to avoid using javascript. Is there a way to use APEX built-in functionality to do that? I know I can use Show action to hide an item, but I only need to show it if item2 is Yes. The APEX Show action does not have a condition
Also have the same issue with On Change event:
var result = document.getElementById("result");
var status = document.getElementById("status");
if (status.options[status.selectedIndex].text == "Completed") {
var r = confirm("Are you sure you want to set the status to Completed?");
if (r == true) {
apex.submit({request:'STATUS_CHANGE'})
}
} else {
result.value = "";
$x("P2_THE_DATE").value = "";
apex.submit({request:'STATUS_CHANGE'})
}
//set a value of a hidden field for status
apex.item("P2_STATUS").setValue(status.options[status.selectedIndex].text);
Is there a better, more efficient way to do this?

Answer 1

ITEM2 must get its value on load somehow, right? So, use the same code (that populates ITEM2) as a condition for ITEM1 and check whether its value is "Yes" (and display it) or "No" (so don't).
I prefer using a function that returns a Boolean to do so; something like
declare
l_item2 varcahr2(10);
begin
-- this is supposed to look like source for ITEM2
select ...
into l_item2
from ...
where ...;
return l_item2 = 'Yes';
end;

Answer 2

Isn't that a perfect use case to incorporate js - to have a dynamic behavior on a web page. Why would you want to avoid it? I'm just curious.
Anyway, you could however achieve similar behavior, provided the item2 is a Select List or Radio Group.
Set the 'Page Action on Selection' to Submit
Set the source used to 'Only when current values is NULL' - so the value gets stored in the session even after submitting the page.
Have the conditional display for item1 set as "ITEM is NOT NULL" and choose ITEM2 as the item.
If you follow these steps, the ITEM1 would show up after the selection of ITEM2.