IView中更新Carousel 的數(shù)據(jù)，點(diǎn)擊按鈕出錯(cuò)

in .Vue,

data(){
    appData:[
            {
                imgs: "https://res.o2o.cn/img/d7533bfc5301434393206aaef42238ed.jpg",
                bannerText: "banner文字描述111"
            },
            {
                imgs: "https://res.o2o.cn/img/6ce06311a47d49a6893280f7242fe8f8.jpg",
                bannerText: "banner文字描述222"
            },
            {
                imgs: "https://res.o2o.cn/img/31454866799d4611948d468a2f7c416a.jpg",
                bannerText: "banner文字描述333"
            }
         ]
}

the template:

 <Carousel v-model="value3"
            :autoplay="true">
    <CarouselItem v-for="item in appData"
        :key="item.imgs">
        ...
            <img :src="item.imgs" />
        ...
    </CarouselItem>
</Carousel>

after a time,i would like to change the 'appData':

[{"imgs":"https://res.o2o.cn/img/e554db4979424c34a61502479e766e94.jpg","bannerText":"輪播圖2","url":"購(gòu)物車(chē)"},{"imgs":"https://res.o2o.cn/img/d85d9d6b6eab4b51a525088125a50651.jpg","bannerText":"輪播圖1","url":"直播"}]

The Carousel seems doing right.
But when i click the button(radius-dot or arrow-button),the three page show.