# 7.1 蒙层
用于弹窗出现时，遮蔽底部文字，避免干扰
# 基础用法
vue <template> <dof-overlay></dof-overlay> </template>
# Attributes
| Prop | Type | Required | Default | Description |
|---|---|---|---|---|
show** | Boolean | N | true | - |
hasAnimation** | Boolean | N | true | - |
duration** | [Number | N | 300 | - |
timingFunction** | Array | N | () => ['ease-in' | - |
opacity** | [Number | N | undefined | - |
canAutoClose** | Boolean | N | true | - |
needDarkMode** | Boolean | N | false | - |