vue的element ui 轮播图的高度设置成自适应

vue的element ui 轮播图的高度设置成自适应

<el-carousel arrow="never" :height="height">
         <el-carousel-item v-for="item in bannerArr" :key="item">
                 <img :src="item.sImg" alt="">
          </el-carousel-item>
</el-carousel>

beforeMount:function(){
         this.height = $(window).width()*664/1920 + 'px';
},