OR  operator.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>
    
    <body>
   
    
         <button onclick="showprompDiglog()">prompt</button>
     
         <p id="pid"></p>
     
     
         <script>
     
     
            //  function ShowConfirmDialog(){
     
            //      var result=confirm("Are you sure u want to confirm?")
            //      if(result){
            //          document.write("you confirmed.....")
            //      }
            //      else{
            //          document.write("you cancelled...")
            //      }
            //  }
     
     
             function showprompDiglog(){
     
                 var name=prompt("Enter valid name")
     
                 if (!isNaN(name) || name==''){
                     document.write("invalid ...")
                 }
                 else{
                     document.getElementById("pid").innerHTML="you entered: "+name
                 }
     
             }


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