返回顶部的方法

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src/components/d2-container/components/mixins/scroll.normal.js

@@ -45,6 +45,17 @@ export default {
     // 移除滚动事件监听
     removeScrollListener () {
       this.$refs.body.removeEventListener('scroll', this.handleScroll)
+    },
+    // 外部调用的方法 返回顶部
+    scrollToTop () {
+      const smoothscroll = () => {
+        var currentScroll = this.$refs.body.scrollTop
+        if (currentScroll > 0) {
+          window.requestAnimationFrame(smoothscroll)
+          this.$refs.body.scrollTo(0, currentScroll - (currentScroll / 5))
+        }
+      }
+      smoothscroll()
     }
   }
 }

src/components/d2-container/index.js

@@ -48,6 +48,7 @@ export default {
       class: 'container-component'
     }, [
       h(this.component, {
+        ref: 'component',
         props: this.$attrs,
         on: {
           scroll: e => this.$emit('scroll', e)
@@ -58,5 +59,11 @@ export default {
         props: this.$attrs
       }) : undefined
     ])
+  },
+  methods: {
+    // 返回顶部
+    scrollToTop () {
+      this.$refs.component.scrollToTop()
+    }
   }
 }