1.HelloWorld

first java script

by John Kiran

HTML

<html>

<head>
    <title>
        first javascript
    </title>
</head>

<body>

    <p>Before the script...</p>

    <script>
        alert('Hello, world!');
        ["first alert","second alert","last alert"].forEach(alert);
    </script>

    <p>...After the script.</p>

</body>

</html>