JSFiddle - React, Tailwind, and code Playground

HTML

<body>
    <div  id="survey-timer"></div>
</body>

JavaScript

var m=0
    var s=0
    var timer_container=document.getElementById("survey-timer");
    timer_container.innerHTML=s+"."+m;
    timer();
    function timer(){
    if (m>=9){
        m=-1;
        s+=1;
    }
    if(s>=0){
        m+=1;
        timer_container.innerHTML=s+"."+m;
        setTimeout(timer,100);
    }
    }