iview的Modal组件点击确定按钮如何阻止弹窗的关闭

Modal属性footer-hide设置为true，隐藏默认的modal底部，使用slot插入自定义的底部按钮

<Modal title="标题" v-model="modal1" :footer-hide=true>
   <div slot="footer">
       <Button type="ghost">取消</Button>
       <Button type="primary" @click="confirmFun">确定</Button>
   </div>
</Modal>