*OJO LA CLAVE ESTÁ EN AGREGAR ':checked' AL SELECTOR A LA HORA DE OBTENER EL .val()
var scheduleFrequency;
/* CHECKBOXES
<label class="checkbox">
<input type="checkbox" data-toggle="checkbox" name="scheduled-days[]" value="L">
<i></i> L
</label>
<label class="checkbox">
<input type="checkbox" data-toggle="checkbox" name="scheduled-days[]" value="M">
<i></i> M
</label>
*/
scheduleFrequency = [];
$('input[name="scheduled-days[]"]:checked').each(function(){
scheduleFrequency.push($(this).val());
});
scheduleFrequency = scheduleFrequency.join(',');
/* RADIOBUTTONS
<label class="radio">
<input type="radio" data-toggle="radio" name="scheduled-frequency" value="7">
<i></i> Semanal
</label>
<label class="radio">
<input type="radio" data-toggle="radio" name="scheduled-frequency" value="15">
<i></i> Quincenal
</label>
*/
scheduleFrequency = $('input:radio[name="scheduled-frequency"]:checked').val();