How can I verify that these menu items clicktab('tab_detail',false);srchlog('listing number','click',true); are clickable or not?

Regarding clicktab('tab_detail',false);srchlog('listing number','click',true);

How should I answer if the tab is clickable or not? The tab itself.
So, in the tab page object, you should have a function like this:
function isClickable() {
   return this.getAttribute('class').contains('disable');
}
With this, in your test, you can get each tab and test it:
expect(tabA.isClickable().toBe(True));
...
expect(tabE.isClickable().toBe(False));
If you pass the locator for each tab into the Tab page object, it can be used for all tabs. This way, when the way the tabs get disabled change, you will need to change only the isClickable function.