Untitled

<html>
<head>
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript">
$(document).ready(function(){
  $("button")click(function(){
    $(".button-1").append(" <b>W3Schools</b>.");
  });
});
</script>
</head>

<body>
<input class="input" type="text name="input">
<input class="button-1" type="button" value="1" name="button-1">

</body>
</html>