取指定class標籤名
/**
* VECTOR
* https://vector.cool
*/
<script>
$('.classname').get(0).tagName;
$('.classname')[0].tagName;
$('.classname').prop("tagName");
</script>
/**
* VECTOR
* https://vector.cool
*/
<script>
$('.classname').get(0).tagName;
$('.classname')[0].tagName;
$('.classname').prop("tagName");
</script>