Question

$('#delete').click(function (e) {
    e.preventDefault();
    var result = true;
    if($('.checkbox:checked').length < 1) {
        $.notifyBar({
            cls: "error",
            html: 'At least 1 checkbox must be checked.',
            delay: 5000
        });
        result = false;
    }
    return result;
});

the problem is button doesn’t submit form if all goes well
Is there any wrong?

Answer 1

The call to e.preventDefault() is preventing the default action of the button which is to submit the form. You need to only call that when you don’t want a submit to occur.

$('#delete').click( function(e) {
  if($('.checkbox:checked').length<1){
    $.notifyBar({
      cls: "error",
      html: 'At least 1 checkbox must be checked.',
      delay: 5000
    });

    // Invalid, stop the submit
    e.preventDefault();
  }
})