要使用div元素包装表，请使用wrap()方法。您可以尝试运行以下代码以使用jQuery的div元素包装表-
<!DOCTYPE html>
<html>
<head>
<script src="https://cdn.staticfile.org/jquery/3.2.1/jquery.min.js"></script>
<script>
$(document).ready(function(){
$("#button1").click(function(){
$('table').wrap('<div></div>');
});
});
</script>
<style>
div {
background-color: gray;
}
</style>
</head>
<body>
<table style="width:100%">
<tr>
<th>Firstname</th>
<th>Lastname</th>
<th>Age</th>
</tr>
<tr>
<td>Will</td>
<td>Smith</td>
<td>50</td>
</tr>
<tr>
<td>Eve</td>
<td>Jackson</td>
<td>94</td>
</tr>
</table>
<button id="button1">Wrap</button>
</body>
</html>