JSFiddle - React, Tailwind, and code Playground

HTML

<div id="l1">c</div>
<div id="l2">c</div> 
<a href="#" id="link">Link</a>

JavaScript

var link = document.getElementById("link");
link.onclick = function() {
			timeo ("l2", 1); 
        return false;
    };	  
	
timeo ("l1", 1);


  
function myf(el, nu){
    ele = document.getElementById(el);
    num = nu + 1;
    ele.innerHTML = num;
    if(num < 10){return timeo(el, num);}
}

function timeo(el, nu){	
    setTimeout(function() {
        myf(el, nu);
    }, 1000);
}