Edit in JSFiddle

<body>
<p id="target">This is 20Fingers2Brains. </p>
<button id="apply">Click ME!</button>
<button  onclick="location.reload()">Reset</button>
</body>
$(document).ready(function () {
        $('#apply').click(function () {
            $('#target').append("<b>powered by KK.</b>")
        });
    });