Jquery加减按钮的最佳内联函数是什么?[已关闭]

$( document ).ready(function() {
   $('#plus,#minus').on('click',handlePlusMinus);     
});
 
function handlePlusMinus(event){
	var val = parseInt($('#t1').val()) + parseInt($(this).data("val"));
	$('#t1').val(val);
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<form id='myform' method='POST' action='#'>
	<input type='button' id='minus' value='-' data-val='-1' />
	<input type='text' id="t1" name='quantity' value='1' />
	<input type='button' id='plus' value='+' data-val='1'/>
</form>