Form was not submitted with checkbox array - php

Question

Although the following function has a little problem. But I can not find. Every time either checkbox is checked or not but form was not submitted!!
<input type="checkbox" name="chk_user[]" value="1" class="chk_delete" id="1" />
<input type="checkbox" name="chk_user[]" value="2" class="chk_delete" id="2" />
<input type="checkbox" name="chk_user[]" value="3" class="chk_delete" id="3" />
<input type="checkbox" name="chk_user[]" value="4" class="chk_delete" id="4" />
<script>
$("form").submit(function() {
$('.chk_delete').each(function(){
if($(this).is(':checked')){
return true;
}
});
alert("No entry was selected!");
return false;
});
</script>
Can anybody locate the problem?
The following is working, but I don't understand why. Any good logic?
$("form").submit(function(e) {
if(!$('input[type=checkbox]:checked').length) {
e.preventDefault();
alert("No entry was selected!"); }
return true; });

Answer 1

Give this a whirl:
$("form").submit(function(e) {
if(!$('input[type=checkbox]:checked').length) {
e.preventDefault();
alert("No entry was selected!"); }
return true; });

Answer 2

You are using the return true into the each loop. Using return in the each loop just mean if the loop continue (on true) or if it stop (on false).
That beign said, you script will alway roll hover a return false, preventing the form from submiting.
What you could do
If you want to keep the loop, save if it's true or false in a var!
var isChecked = false;
$('.chk_delete').each(function(){
isChecked = $(this).is(':checked')
return !isChecked;
});
return isChecked;
OR
Use your working script, I don't see what's wrong with it
$("form").submit(function(e) {
if(!$('input[type=checkbox]:checked').length) {
e.preventDefault();
alert("No entry was selected!");
}
return true;
});
$('input[type=checkbox]:checked') select every checked box. So $('input[type=checkbox]:checked').length take the length. Having ! is the same thing as !=.
Finally, !$('input[type=checkbox]:checked').length is a shotcut for $('input[type=checkbox]:checked') != 0. If true, it .preventDefault() wich prevent the form of submiting.