Javascript/DialogueBoxes.html at master · adityaprasad-op/Javascript · GitHub

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<!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>

    <input type="button" name="" onclick="myfunc()" value="click me">
    <script>
        //alert box->pop-up message
        alert("Hello");
        // prompt box->if u want a user to input a value before entering the website.user will have to click either "OK" or "cancel"
        var name= prompt("what is your name?");
        if(name!=""){
            document.write("Welcome"+" "+name);
        }
        document.write("<br>");
        //confirm box->used to take user permission.If user clicks on "OK" it will return true otherwise false
        function myfunc(){
            var userconfirmation=confirm("Do you want to visit the website?");
            if(userconfirmation==true){
                window.open("https://www.google.com/"); //opens a new window of the link
                return true;
            }else{
                document.write("user does not want to visit the website");
                return false;
            }
        }
    </script>
</body>
</html>