优化滚动渐变虚拟导航栏，修复完全显示时滚动抖动问题

src/pages/index/index.vue

@@ -71,15 +71,12 @@
       })
     },
     onPageScroll(e) {
-      if (this.canUse['navigationStyle']){
+      if (this.canUse['navigationStyle']) {
         let scrollTop = e.scrollTop > 0 ? e.scrollTop - this.statusBarHeight : 0
-        let isShowTitle = 1 - scrollTop * 0.01
-        if (isShowTitle < 0) {
-          isShowTitle = 0
-        }
-        if (isShowTitle > 1) {
-          isShowTitle = 1
-        }
+        let isShowTitle = Number((1 - scrollTop * 0.01).toFixed(2))
+        isShowTitle =
+          isShowTitle < 0 ? 0 : isShowTitle > 1 ? 1 : isShowTitle
+        if (this.isShowTitle === isShowTitle) return
         this.isShowTitle = isShowTitle
       }
     },

src/pages/store/index/index.vue

@@ -782,13 +782,10 @@
     onPageScroll(e) {
       if (this.canUse['navigationStyle']) {
         let scrollTop = e.scrollTop > 0 ? e.scrollTop - this.statusBarHeight : 0
-        let isShowTitle = 1 - scrollTop * 0.01
-        if (isShowTitle < 0) {
-          isShowTitle = 0
-        }
-        if (isShowTitle > 1) {
-          isShowTitle = 1
-        }
+        let isShowTitle = Number((1 - scrollTop * 0.01).toFixed(2))
+        isShowTitle =
+          isShowTitle < 0 ? 0 : isShowTitle > 1 ? 1 : isShowTitle
+        if (this.isShowTitle === isShowTitle) return
         this.isShowTitle = isShowTitle
       }
     },