JSFiddle - React, Tailwind, and code Playground

JavaScript

function tempAlert(msg,duration)
{
     var el = document.createElement("div");
     el.setAttribute("style","position:absolute;top:40%;left:20%;background-color:white;");
     el.innerHTML = msg;
     setTimeout(function(){
      el.parentNode.removeChild(el);
     },duration);
     document.body.appendChild(el);
}

tempAlert("Happy new year",1000);