JSFiddle - React, Tailwind, and code Playground

HTML

<div id="demo">
Hello
</div>

JavaScript

var n=new Date();
  var jam=n.getHours();
  var time = "";
  console.log(jam);
  switch (true) {
  case jam>=17:
    time = "sleep";
    break;
   case jam<17:
    time = "work";
    break;     
   }
  document.getElementById("demo").innerHTML = "This Time for " + time