JSFiddle - React, Tailwind, and code Playground

HTML

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

JavaScript

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

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