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95 lines
2.6 KiB
Markdown
95 lines
2.6 KiB
Markdown
# 展开子菜单
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你可以设定 `default-expanded-names` 让菜单工作在非受控状态下或者使用 `expanded-names` 和 `@expanded-names-change` 以受控的方式控制菜单。
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```html
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<n-menu
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v-model="activeName"
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:default-expanded-names="defaultExpandedNames"
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@expanded-names-change="handleExpandedNamesChange"
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@select="handleSelect"
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>
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<n-menu-item title="且听风吟" name="hear-the-wind-sing">
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<template v-slot:icon>
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<n-icon>
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<book-icon />
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</n-icon>
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</template>
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</n-menu-item>
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<n-submenu title="1973年的弹珠玩具" name="pinball-1973" disabled>
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<template v-slot:icon>
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<n-icon>
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<book-icon />
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</n-icon>
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</template>
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<n-menu-item title="鼠" name="rat" />
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</n-submenu>
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<n-menu-item title="寻羊冒险记" name="a-wild-sheep-chase" disabled>
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<template v-slot:icon>
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<n-icon>
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<book-icon />
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</n-icon>
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</template>
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</n-menu-item>
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<n-submenu title="舞，舞，舞" name="dance-dance-dance">
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<template v-slot:icon>
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<n-icon>
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<book-icon />
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</n-icon>
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</template>
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<n-menu-item-group title="人物">
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<n-menu-item title="叙事者" name="narrator">
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<template v-slot:icon>
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<n-icon>
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<person-icon />
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</n-icon>
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</template>
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</n-menu-item>
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<n-menu-item title="羊男" name="sheep-man">
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<template v-slot:icon>
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<n-icon>
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<person-icon />
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</n-icon>
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</template>
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</n-menu-item>
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</n-menu-item-group>
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<n-submenu title="饮品" name="beverage">
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<template v-slot:icon>
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<n-icon>
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<wine-icon />
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</n-icon>
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</template>
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<n-menu-item title="威士忌" name="whisky" />
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</n-submenu>
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<n-submenu title="食物" name="food">
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<n-menu-item title="三明治" name="sandwich" />
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</n-submenu>
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<n-menu-item title="过去增多，未来减少" name="the-past-increases-the-future-recedes" />
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</n-submenu>
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</n-menu>
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```
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```js
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import bookIcon from 'naive-ui/lib/icons/book-outline'
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import personIcon from 'naive-ui/lib/icons/person-outline'
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import wineIcon from 'naive-ui/lib/icons/wine-outline'
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export default {
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components: {
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bookIcon,
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personIcon,
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wineIcon
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},
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data () {
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return {
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defaultExpandedNames: ['dance-dance-dance', 'food'],
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activeName: null
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}
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},
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methods: {
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handleSelect (value) {
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this.$NMessage.info('Select: ' + JSON.stringify(value))
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},
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handleExpandedNamesChange (value) {
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this.$NMessage.info('ExpandedNamesChange: ' + JSON.stringify(value))
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}
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}
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}
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``` |