Примеры для jQuery Селектор :empty

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Finds all elements that are empty - they don't have child elements or text.

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<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>empty demo</title>
  <style>
  td {
    text-align: center;
  }
  </style>
  <script src="https://code.jquery.com/jquery-1.10.2.js"></script>
</head>
<body>
 
<table border="1">
  <tr><td>TD #0</td><td></td></tr>
  <tr><td>TD #2</td><td></td></tr>
  <tr><td></td><td>TD#5</td></tr>
</table>
 
<script>
$( "td:empty" )
  .text( "Was empty!" )
  .css( "background", "rgb(255,220,200)" );
</script>
 
</body>
</html>

Демонстрация: