testing_asynchronous.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <button onclick="better()">Check</button>
    <div class="well" id="well"></div>
    <div class="well" id="well1"></div>
    <div id="data"></div>
    <script>
        function better(){
            document.getElementById("well").innerHTML = "Pure Water";
            let data=document.getElementById("data");
            
            data.innerHTML = "The datas are executed";
            
            setTimeout(() => {
                console.log("Async task done!");
            }, 3000);  // 3 seconds delay
            
           
            document.getElementById("well1").innerHTML = "Hot Water";
            
}

 </script>
</body>
</html>