diff --git a/README.md b/README.md
index ed68ab2..02ac91b 100644
--- a/README.md
+++ b/README.md
@@ -103,8 +103,16 @@ export default {
 </script>
 ```
 
+## 已完成组件
+
+- `this.$dialog(...)`：弹窗
+- `this.$actionsheet(...)`：底部弹出
+- `this.$loading(...)`：全屏loading
+- `this.$toast(...)`：轻提示
+- `this.$preview(...)`：图片预览
+
 ## 其他Vue插件
 
+- `v-src`：懒加载
 - `v-pulldown`：下拉刷新
 - `v-pullup`：加载更多
-- `v-src`：懒加载
diff --git a/package.json b/package.json
index 759afd6..8b8dc96 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@moohng/dui",
-  "version": "1.1.1",
+  "version": "1.2.0",
   "private": false,
   "description": "基于 Vue 2 的轻量级组件库",
   "author": "Kevin",
diff --git a/src/components/preview/preview.vue b/src/components/preview/preview.vue
index fd95ee8..d04846f 100644
--- a/src/components/preview/preview.vue
+++ b/src/components/preview/preview.vue
@@ -3,8 +3,10 @@
     <div class="dui-preview__wrap">
       <div class="dui-preview__slide bg-img" v-for="(item, index) in options" :key="index" v-src="item"></div>
     </div>
-    <!-- 索引 -->
-    <div class="dui-preview__index">{{current + 1}}/{{options.length}}</div>
+    <slot>
+      <!-- 索引 -->
+      <div class="dui-preview__index">{{current + 1}}/{{options.length}}</div>
+    </slot>
   </div>
 </template>