jquery all checked checkboxes code example

Example 1: jquery validate all checkbox checked

<form id="form1" action="/controller/action" method="post">
   <input type="checkbox" name="box1" class="cBox" />
   <input type="checkbox" name="box2" class="cBox" />
   <input type="checkbox" name="box3" class="cBox" />
  <input type="submit" value="Submit" />
</form>
<script>
$('#form1').submit(function() {
   if ($('input:checkbox', this).length == $('input:checked', this).length ) {
            // everything's fine...
   } else {
            alert('Please tick all checkboxes!');
            return false;
   }
});
</script>

Example 2: jquery get all checkbox checked

$('.theClass:checkbox:checked')

Example 3: find all checkbox inside div jquery

$('#selectChb').click(function(){ 
     $(':checkbox').prop("checked", true);
});

Example 4: select all checkbox jquery

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<form>
  <table>
    <tr>
      <td><input type="checkbox" id="select_all" /></td>
    </tr>
    <tr>
      <td><input type="checkbox" name="select[]" /></td>
    </tr>
    <tr>
      <td><input type="checkbox" name="select[]" /></td>
    </tr>
    <tr>
      <td><input type="checkbox" name="select[]" /></td>
    </tr>
  </table>
</form>