refactor(ui): 首页添加回到最顶端按钮

common/js/scroll-view.js

@@ -3,7 +3,8 @@ export default {
 		return {
 			showTop: false,
 			scrollTop: 0,
-			oldLocation: 0
+			oldLocation: 0,
+            minScrollTop: 400, // 内置最小scrollTop值设置, 方便组件自身差异化设置
 		}
 	},
 	methods: {
@@ -19,7 +20,7 @@ export default {
 	},
 	onPageScroll(e) {
 		this.oldLocation = e.scrollTop;
-		if (e.scrollTop > 400) {
+		if (e.scrollTop > this.minScrollTop) {
 			this.showTop = true;
 		} else {
 			this.showTop = false;