就比如像这样的:
<script type="text/javascript">
var number=0;
function next(){
$('#showdata').append('<input class="number_showdata" id="showdataid'+number+'" type="text" name="" />');
number++;
}</script>
<input data-theme="e" type="reset" onclick="next()" name="button" id="button" value="点击显示" />
<body>
<div id = "showdata">
</div>
</body>
中的id如何获取,并且利用它