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<!DOCTYPE html>
<html>
<head>
<style> 
table, td {
  border: 1px solid black;
  margin: 15px;
}
</style>
</head>
<body>
<h1>Change empty-cells with JavaScript</h1>
<p>Click the "Try it" button to "hide" or "show" empty table-cells:</p>
<button type="button" onclick="hide()">Hide empty cells</button>
<button type="button" onclick="show()">Show empty cells</button>
<table id="myTABLE">
  <tr>
    <td>Peter</td>
    <td>Griffin</td>
  </tr>
  <tr>
    <td>Lois</td>
    <td></td>
  </tr>
</table>
<script>
function hide() {
  document.getElementById("myTABLE").style.emptyCells = "hide";
}
function show() {
  document.getElementById("myTABLE").style.emptyCells = "show";
}
</script>
</body>