vue滚动插件BetterScroll回到顶部

<script>
  import BetterScroll from 'better-scroll'

  export default {
    name: 'HelloWorld',
    data() {
      return {
        msg: 'Welcome to Your Vue.js App',
        scroll: null
      }
    },
    mounted() {
      console.log("mounted");

      this.scroll = new BetterScroll('.hello', {

      });
    },
    methods: {
      onClick() {
        console.log("onClick");

        // 回顶部
        // this.scroll.scrollTo(x, y, time);
        this.scroll.scrollTo(0, 0, 1000);
      }
    }
  }
</script>