docs(changelog): 2.12.29

docs/markdown/changelog.en-US.md

@@ -16,6 +16,14 @@ Vant follows [Semantic Versioning 2.0.0](https://semver.org/lang/zh-CN/).
 
 ## Details
 
+### [v2.12.29](https://github.com/youzan/vant/compare/v2.12.28...v2.12.29)
+
+`2021-09-22`
+
+**Bug Fixes**
+
+- Tabs: failed to scroll into view when render multiple tabs [#9542](https://github.com/youzan/vant/issues/9542)
+
 ### [v2.12.28](https://github.com/youzan/vant/compare/v2.12.27...v2.12.28)
 
 `2021-09-20`

docs/markdown/changelog.zh-CN.md

@@ -16,6 +16,14 @@ Vant 遵循 [Semver](https://semver.org/lang/zh-CN/) 语义化版本规范。
 
 ## 更新内容
 
+### [v2.12.29](https://github.com/youzan/vant/compare/v2.12.28...v2.12.29)
+
+`2021-09-22`
+
+**Bug Fixes**
+
+- Tabs: 修复多个 Tabs 组件同时存在时动画失效的问题 [#9542](https://github.com/youzan/vant/issues/9542)
+
 ### [v2.12.28](https://github.com/youzan/vant/compare/v2.12.27...v2.12.28)
 
 `2021-09-20`

package.json

@@ -1,6 +1,6 @@
 {
   "name": "vant",
-  "version": "2.12.28",
+  "version": "2.12.29",
   "description": "Mobile UI Components built on Vue",
   "main": "lib/index.js",
   "module": "es/index.js",

src/tabs/utils.ts

@@ -1,15 +1,11 @@
-import { raf, cancelRaf } from '../utils/dom/raf';
+import { raf } from '../utils/dom/raf';
 import { getScrollTop, setScrollTop } from '../utils/dom/scroll';
 
-let scrollLeftRafId: number;
-
 export function scrollLeftTo(
   scroller: HTMLElement,
   to: number,
   duration: number
 ) {
-  cancelRaf(scrollLeftRafId);
-
   let count = 0;
   const from = scroller.scrollLeft;
   const frames = duration === 0 ? 1 : Math.round((duration * 1000) / 16);
@@ -18,7 +14,7 @@ export function scrollLeftTo(
     scroller.scrollLeft += (to - from) / frames;
 
     if (++count < frames) {
-      scrollLeftRafId = raf(animate);
+      raf(animate);
     }
   }