Untitled

<!DOCTYPE html>
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<html>
    <head>
        <title>day 18</title>
        <meta charset="UTF-8">
        <meta name="viewport" content="width=device-width, initial-scale=1.0">
        <link href="style.css" rel="stylesheet">

    </head>
    <body>
        <p id="demo1"></p>
        <p id="demo2"></p>
        <button type="button" onclick="document.getElementById('demo1').innerHTML = 'Add Text'">Click Here</button>
        <p id="demo">
            This is Paragraph
        </p>
        <button type="button" onclick="document.getElementById('demo').innerHTML = 'Hello JAVASCRIPT'">Click Here</button>

        <script>
            document.getElementById('demo2').innerHTML = 10 + 5;
            document.write(10 + 35);
            document.write('<br/>');
            document.write('10 + 35');
        </script>
    </body>
</html>