$(document).ready(function() {
$('.input-group input[required], .input-group textarea[required], .input-group select[required]').on('keyup change', function() {
var $form = $(this).closest('form'),
$group = $(this).closest('.input-group'),
$addon = $group.find('.input-group-addon'),
$icon = $addon.find('span'),
state = false;
if (!$group.data('validate')) {
state = $(this).val() ? true : false;
}else if ($group.data('validate') == "email") {
state = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/.test($(this).val())
}else if($group.data('validate') == 'phone') {
state = /^[(]{0,1}[0-9]{3}[)]{0,1}[-\s\.]{0,1}[0-9]{3}[-\s\.]{0,1}[0-9]{4}$/.test($(this).val())
}else if ($group.data('validate') == "length") {
state = $(this).val().length >= $group.data('length') ? true : false;
}else if ($group.data('validate') == "number") {
state = !isNaN(parseFloat($(this).val())) && isFinite($(this).val());
}
if (state) {
$addon.removeClass('danger');
$addon.addClass('success');
$icon.attr('class', 'glyphicon glyphicon-ok');
}else{
$addon.removeClass('success');
$addon.addClass('danger');
$icon.attr('class', 'glyphicon glyphicon-remove');
}
if ($form.find('.input-group-addon.danger').length == 0) {
$form.find('[type="submit"]').prop('disabled', false);
}else{
$form.find('[type="submit"]').prop('disabled', true);
}
});