By default, the validator will only validate fields that are present when the plugin is initialized. If your form has a dynamic set of fields, you will need to call $(...).validator(‘update‘) to inform the plugin that the set of fields to be validated has changed.
我用的jquery的clone方法动态生成的row，所以用row.validator(‘update‘).
Bootstrap Validator使用特性，动态（Dynamic）添加的input的验证问题
原文：http://www.cnblogs.com/rgqancy/p/6890712.html