<input type="button" value="+"/>
<input type="button" value="-"/>
<input type="button" value="*"/>
<input type="button" value="/"/>
<script type="text/javascript" src="http://code.jquery.com/jquery.min.js"></script>
<script type="text/javascript">
$('input:button').click(
function(){
alert(this.value);
}
);
</script>