dblfunction.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <p>You Want Show AlertBox</p>
   <!-- <input type="button" ondblclick="showfun()" value="Double Click1"><br>
    <input type="button" ondblclick="myfun()" value="Double Click2">
    <h1 id="fn"></h1>-->
    <br>
    <p id="my" ondblclick="newfun()">Double Click</p>
  
    
</body>
<script>
   /* function myfun(){
   alert("Welcome");
    }
   function showfun(){
        Prompt for Display the value
       var a= prompt("Double Click Me");
      alert(a);
    }*/
    function newfun(){
       var b= document.getElementById('my').innerHTML;
        var a= prompt(b);
        document.getElementById('my').innerHTML = a;
    }
</script>
</html>