JSFiddle - React, Tailwind, and code Playground

HTML

<div id="days"></div>
<div id="seconds"></div

JavaScript

function timer() {

  var now     = Date.now(),
      newdate = new Date("March, 19, 2014"),
      daysDiv = document.getElementById("days"),
      SecCount = Math.round((newdate - now) / 1000);
    
  DayCount = SecCount / (3600 * 24);
    console.log(Math.round(DayCount) );
  if (SecCount === 1) {
    daysDiv.innerHTML = "يوم واحد";
  } else if (SecCount === 2) {
    daysDiv.innerHTML = "يومان";
  } else if (SecCount > 2 && SecCount < 10) {
    document.getElementById("days").innerHTML = SecCount + " أيام";
  } else {
    document.getElementById("seconds").innerHTML = SecCount + " يوم";
  }
    
  setTimeout(timer, 1000);
}

timer();