JSFiddle - React, Tailwind, and code Playground

by Gabriele Petrioli

HTML

<button id="start">start</button>
<button id="check">check</button>

<div id="start_result"></div>
<div id="check_result"></div>

JavaScript

var startTimer;

$('#start').click(function(){
    startTimer = new Date();
    $('#start_result').text( startTimer.toLocaleString() );
    $('#check_result').text('');
});

$('#check').click(function(){
    var timer = new Date(),
        distance = timer - startTimer;
    $('#check_result').append( distance/1000 + ':' + timer.toLocaleString() + '<br />' );
    
});