JSFiddle - React, Tailwind, and code Playground

HTML

<div class="countdown-interval">
  0
</div>

<div class="countdown-timeout">
0
</div>

JavaScript

var GLOBAL_TIMER_INTERVAL = 60 * 1000,
		GLOBAL_TIMER_TIMEOUT = 60 * 1000;

function countdownInterval(){
	var interval = setInterval(function(){
  	if(GLOBAL_TIMER_INTERVAL <= 0){
    	clearInterval(interval);
      return;
    }
    
  	GLOBAL_TIMER_INTERVAL = GLOBAL_TIMER_INTERVAL - 10;
    $('.countdown-interval').text(GLOBAL_TIMER_INTERVAL);
  }, 10);
}

countdownInterval();

function countdownTimeout(){
	setTimeout(function(){
  	if(GLOBAL_TIMER_TIMEOUT <= 0){
    	return;
    }
  
  	GLOBAL_TIMER_TIMEOUT = GLOBAL_TIMER_TIMEOUT - 10;
    $('.countdown-timeout').text(GLOBAL_TIMER_TIMEOUT);
    countdownTimeout();
	}, 10);
}

countdownTimeout();