<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>"Экранная Клавиатура"</title>
</head>
<body>
<script>
$(document).ready(function();{
$(".button_style").click(function();{
var but_val =(this).val();
var but_val =$("#result").val()+ $(this).val();
$("#result").val(but_val);
});
});
</script>
<input type="text" id="result" name="result" class="result" /><br />
<button type="button" class="button_style" value="1" name="one">1</button>
<button type="button" class="button_style" value="2" name="two">2</button>
</body>
</html>