feat: allow string type z-index

src/tabbar/README.md

@@ -161,7 +161,7 @@ export default {
 | v-model | Identifier of current tab | *string \| number* | `0` |
 | fixed | Whether to fixed bottom | *boolean* | `true` |
 | border | Whether to show border | *boolean* | `true` |
-| z-index | Z-index | *number* | `1` |
+| z-index | Z-index | *string \| number* | `1` |
 | active-color | Color of active tab item | *string* | `#1989fa` |
 | inactive-color | Color of inactive tab item | *string* | `#7d7e80` |
 | route | Whether to enable route mode | *boolean* | `false` |

src/tabbar/README.zh-CN.md

@@ -168,7 +168,7 @@ export default {
 | v-model | 当前选中标签的名称或索引值 | *string \| number* | `0` |
 | fixed | 是否固定在底部 | *boolean* | `true` |
 | border | 是否显示外边框 | *boolean* | `true` |
-| z-index | 元素 z-index | *number* | `1` |
+| z-index | 元素 z-index | *string \| number* | `1` |
 | active-color | 选中标签的颜色 | *string* | `#1989fa` |
 | inactive-color | 未选中标签的颜色 | *string* | `#7d7e80` |
 | route | 是否开启路由模式 | *boolean* | `false` |

src/tabbar/index.js

@@ -9,7 +9,7 @@ export default createComponent({
 
   props: {
     route: Boolean,
-    zIndex: Number,
+    zIndex: [Number, String],
     activeColor: String,
     inactiveColor: String,
     safeAreaInsetBottom: Boolean,