var values=[];
$('input[name="your-checkbox-name[]"]:checked').each(function () {
values[values.length] = (this.checked ? $(this).val() : "");
});var selected = [];
$('#checkboxes input:checked').each(function() {
selected.push($(this).attr('name'));
});
$('input:checkbox').prop('checked', true);$('#selectChb').click(function(){
$(':checkbox').prop("checked", true);
});
<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 == $('input:checked', this).length ) {
// everything's fine...
} else {
alert('Please tick all checkboxes!');
return false;
}
});
</script>$('.theClass:checkbox:checked')