JSFiddle - React, Tailwind, and code Playground

JavaScript

function getRandomArbitary(min, max)
{
  return Math.random() * (max - min) + min;
}

setInterval(function(){
	var form = document.getElementsByTagName("form")[2];
	var rand = getRandomArbitary(0,4);
	var str;
	
	switch (Math.round(rand)) {
   case 0:
      str="Херня Win10, ставьте Linux!";
      break;
   case 1:
      str = "Херня Win10, ставьте MS DOS!";
      break;
   case 2:
      str = "Херня Win10, ставьте Solaris!";
      break;
   default:
      str = "Херня Win10, ставьте Win95";
      break;
	}
	var input = form.getElementsByTagName("input")[0];
	input.value = str;
	document.getElementsByClassName("send")[0].click();
}, 300);