How to write onFocusOut for a DIV

Question

I tried to use DOJO on focus out method but it is not working. I have the link to work out.

Click here.

require(["dojo/on"], function(on){
  on(foc, "focusout", function(e){
  alert("hi");
  });
});

HTML

<div id="foc" > work on focus out</div>

Answer 1

Answered here(second answer). To focus a div you must assign its tabindex.