在Bootstrap中更改表单样式以进行验证

我找到了一个代码片段，这正是我需要的，有一点改变。示例代码在这里，我试图创建一个可以在这里访问的示例表单。我需要的唯一调整是，我想在表单加载后显示必填项目的星号。但是到目前为止，它显示了一个错误样式(当页面打开时，这是不希望的)。我怎样更改表格?

    $(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);
        }
    });
    $('.input-group input[required], .input-group textarea[required], .input-group select[required]').trigger('change');
});

 <div class="container">
   <div class="row">
      <h2>Input Validation + Colorful Input Groups</h2>
   </div>
   <div class="row">
      <div class="col-sm-offset-4 col-sm-4">
         <form method="post">
            <div class="form-group">
               <label for="validate-text">Validate Text</label>
               <div class="input-group">
                  <input type="text" class="form-control" name="validate-text" id="validate-text" placeholder="Validate Text" required>
                  <span class="input-group-addon danger"><span class="glyphicon glyphicon-remove"></span></span>
               </div>
            </div>
            <div class="form-group">
               <label for="validate-optional">Optional</label>
               <div class="input-group">
                  <input type="text" class="form-control" name="validate-optional" id="validate-optional" placeholder="Optional">
                  <span class="input-group-addon info"><span class="glyphicon glyphicon-asterisk"></span></span>
               </div>
            </div>
            <div class="form-group">
               <label for="validate-optional">Already Validated!</label>
               <div class="input-group">
                  <input type="text" class="form-control" name="validate-text" id="validate-text" placeholder="Validate Text" value="Validated!" required>
                  <span class="input-group-addon danger"><span class="glyphicon glyphicon-remove"></span></span>
               </div>
            </div>
            <div class="form-group">
               <label for="validate-email">Validate Email</label>
               <div class="input-group" data-validate="email">
                  <input type="text" class="form-control" name="validate-email" id="validate-email" placeholder="Validate Email" required>
                  <span class="input-group-addon danger"><span class="glyphicon glyphicon-remove"></span></span>
               </div>
            </div>
            <div class="form-group">
               <label for="validate-phone">Validate Phone</label>
               <div class="input-group" data-validate="phone">
                  <input type="text" class="form-control" name="validate-phone" id="validate-phone" placeholder="(814) 555-1234" required>
                  <span class="input-group-addon danger"><span class="glyphicon glyphicon-remove"></span></span>
               </div>
            </div>
            <div class="form-group">
               <label for="validate-length">Minimum Length</label>
               <div class="input-group" data-validate="length" data-length="5">
                  <textarea type="text" class="form-control" name="validate-length" id="validate-length" placeholder="Validate Length" required></textarea>
                  <span class="input-group-addon danger"><span class="glyphicon glyphicon-remove"></span></span>
               </div>
            </div>
            <div class="form-group">
               <label for="validate-select">Validate Select</label>
               <div class="input-group">
                  <select class="form-control" name="validate-select" id="validate-select" placeholder="Validate Select" required>
                     <option value="">Select an item</option>
                     <option value="item_1">Item 1</option>
                     <option value="item_2">Item 2</option>
                     <option value="item_3">Item 3</option>
                  </select>
                  <span class="input-group-addon danger"><span class="glyphicon glyphicon-remove"></span></span>
               </div>
            </div>
            <div class="form-group">
               <label for="validate-number">Validate Number</label>
               <div class="input-group" data-validate="number">
                  <input type="text" class="form-control" name="validate-number" id="validate-number" placeholder="Validate Number" required>
                  <span class="input-group-addon danger"><span class="glyphicon glyphicon-remove"></span></span>
               </div>
            </div>
            <button type="submit" class="btn btn-primary col-xs-12" disabled>Submit</button>
         </form>
      </div>
   </div>
</div>