<!DOCTYPE html>
<html lang="en-US">
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script> <style>
table, th, td{
border: 1px solid black;
}
table{
width: 250px;
}
</style>
</head>
<body>
<h1>jQuery :parent Selector</h1>
<table>
<tr>
<th>Name</th>
<th>Age</th>
</tr>
<tr>
<td>Mike</td>
<td>35</td>
</tr>
<tr>
<td>John</td>
<td></td>
</tr>
<tr>
<td>Jade</td>
<td></td>
</tr>
</table>
<script>
$(document).ready(function(){
$("td:parent").css("background","#66ff66");
$("td:empty").css("background","#ff6666");
});
</script>
<p><strong>Note</strong>: green is ':parent' and red is ':empty'</p> </body>
</html>