Selector empty

The :empty selector selects elements that have no descendants (that is, empty elements, which contain neither an element nor text).

Syntax

Getting empty elements:

$(':empty');

We have a table table with a green background, let's find the cells td that don't have any text or element inside them and color them gray:

<table>
	<tr><td>aaa</td><td></td></tr>
	<tr><td>bbb</td><td></td></tr>
	<tr><td>ccc</td><td></td></tr>
</table>

table {
	border: 1px;
}
	
td {
	width: 40px;
	background: green;
}

$('td:empty').css({background: '#ccc'});