diff --git a/example/docs/zh-CN/components/datePicker.md b/example/docs/zh-CN/components/datePicker.md
new file mode 100644
index 00000000..420ab963
--- /dev/null
+++ b/example/docs/zh-CN/components/datePicker.md
@@ -0,0 +1,23 @@
+::: title 基础使用
+:::
+
+::: demo
+
+<template>
+  <lay-date-picker>
+  </lay-date-picker>
+</template>
+
+<script>
+import { ref } from 'vue'
+
+export default {
+  setup() {
+
+    return {
+    }
+  }
+}
+</script>
+
+:::
diff --git a/example/docs/zh-CN/guide/changelog.md b/example/docs/zh-CN/guide/changelog.md
index 2482ec4c..b6b16aa9 100644
--- a/example/docs/zh-CN/guide/changelog.md
+++ b/example/docs/zh-CN/guide/changelog.md
@@ -11,8 +11,25 @@
 <template>
 <lay-timeline>
   <lay-timeline-item title="0.2.x">
+  <ul> 
+      <a name="0-2-9"> </a> 
+      <li> 
+        <h3>0.2.9 <span class="layui-badge-rim">2021-12-21</span></h3> 
+        <ul> 
+          <li>[新增] backtop 返回顶部组件, 支持自定义功能。</li> 
+          <li>[新增] slider 滑动型输入器，展示当前值和可选范围。</li> 
+          <li>[新增] select 下拉选择组件 multiple 属性, 支持多选策略。</li> 
+          <li>[新增] form 表单组件内置验证, 提供 rules 配置自定义验证规则。</li>
+          <li>[新增] layer 组件 resize 方法, 重置 area 与 offset 状态。</li>
+          <li>[修复] layer 弹层 v-model 切换状态后, 让其保持 area 与 offset 状态。</li>
+          <li>[修复] transfer 穿梭框组件按钮样式, 使其增加减少操作按钮对齐。</li>
+          <li>[修复] tree 树开启 checkbox 时, 无法选中的问题。</li>
+          <li>[升级] layer-vue 1.2.2。</li>      
+        </ul> 
+      </li>
+    </ul>
     <ul> 
-      <a name="0-2-7"> </a> 
+      <a name="0-2-8"> </a> 
       <li> 
         <h3>0.2.8 <span class="layui-badge-rim">2021-12-15</span></h3> 
         <ul> 
diff --git a/example/src/layouts/Layout.vue b/example/src/layouts/Layout.vue
index 5b6c9e52..88f09d16 100644
--- a/example/src/layouts/Layout.vue
+++ b/example/src/layouts/Layout.vue
@@ -43,7 +43,7 @@
           </a>
         </li>
         <li class="layui-nav-item">
-          <a href="javascript:void(0)"> 0.2.8 </a>
+          <a href="javascript:void(0)"> 0.2.9 </a>
         </li>
       </ul>
     </lay-header>
diff --git a/example/src/view/index.vue b/example/src/view/index.vue
index 6ecd579c..5d1abb0c 100644
--- a/example/src/view/index.vue
+++ b/example/src/view/index.vue
@@ -26,7 +26,7 @@
           >
         </div>
         <div class="site-version">
-          <span>当前版本：v<cite class="site-showv">0.2.8</cite></span>
+          <span>当前版本：v<cite class="site-showv">0.2.9</cite></span>
           <span
             ><router-link
               class="layui-inline site-down"
diff --git a/package.json b/package.json
index 51c41179..4ddae431 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@layui/layui-vue",
-  "version": "0.2.8",
+  "version": "0.2.9",
   "description": "a component library for Vue 3 base on layui-vue",
   "homepage": "https://gitee.com/layui-vue/layui-vue/blob/master/README.md",
   "module": "lib/layui-vue.es.js",
@@ -30,14 +30,14 @@
   "peerDependencies": {
     "@layui/hooks-vue": "^0.1.6",
     "@layui/icons-vue": "^1.0.1",
-    "@layui/layer-vue": "^1.2.0",
+    "@layui/layer-vue": "^1.2.2",
     "vue": "^3.2.26",
     "vue-router": "^4.0.12"
   },
   "dependencies": {
     "@layui/hooks-vue": "^0.1.6",
     "@layui/icons-vue": "^1.0.1",
-    "@layui/layer-vue": "^1.2.0",
+    "@layui/layer-vue": "^1.2.2",
     "async-validator": "^4.0.7",
     "evtd": "^0.2.3",
     "vue": "^3.2.26",