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<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>JS Bin</title>
</head>
<body>
<script src="https://code.jquery.com/jquery-3.1.0.js"></script>
<table id="tab" class="table">
  <tr>
    <td>
      <input name="feature-1" class="ExtraCheckBox" type="checkbox"> Primary
    </td>
    <td>
      <input name="feature-1" class="ChildCheckBox" type="checkbox"> Secondary
      <input name="feature-1" class="ChildCheckBox" type="checkbox"> Secondary
    </td>
  </tr>
</table>
</body>
</html>
 
$(".ExtraCheckBox").on('click', function() {
  var checked = $(this).is(":checked");
  if (checked) {
    $("input.ChildCheckBox").each(function() {
      $(this).click();
    });
  } else {
    $("input.ChildCheckBox").each(function() {
      $(this).click();
    });
  }
});
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anonymouspro
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