名称1：<input class="seasoning_name" type="text" name="seasoning_name[]"> 名称2：<input class="seasoning_name" type="text" name="seasoning_name[]"> 名称3：<input class="seasoning_name" type="text" name="seasoning_name[]"> 

seasoning_name = "";$(‘.seasoning_name‘).each(function(){                          seasoning_name += $(this).val();})                                   if(seasoning_name == ""){                          alert("至少填写一项配料！");      return false;  }