2020-01-02 23:21:10 +08:00
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# 折叠侧边栏
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使用 `collapsed` 属性控制侧边栏状态。
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侧边栏有两种 `collapse-mode`：`width`、`transform`。`width` 会改变侧边栏的宽度，而 `transform` 只是将侧边栏移除布局。
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使用 `collapsed-width` 和 `width` 设置侧边栏的宽度。
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```html
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<n-switch v-model="collapsed" />
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<n-layout style="height: 240px;">
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<n-layout-header style="height: 64px;">
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2020-02-03 20:13:14 +08:00
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酷的页头
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2020-01-02 23:21:10 +08:00
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</n-layout-header>
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<n-layout>
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<n-layout-sider
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collapse-mode="width"
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:collapsed-width="120"
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:width="240"
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:collapsed="collapsed"
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show-toggle-button
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@collapse="collapsed = true"
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@expand="collapsed = false"
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>
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2020-02-03 20:13:14 +08:00
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<p>边栏 边栏 边栏 边栏 边栏</p>
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2020-01-02 23:21:10 +08:00
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</n-layout-sider>
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<n-layout>
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<n-layout-content>
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2020-02-03 20:13:14 +08:00
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<span>内容</span>
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2020-01-02 23:21:10 +08:00
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</n-layout-content>
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<n-layout-footer>
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2020-02-03 20:13:14 +08:00
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<n-h1>页脚</n-h1>
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2020-01-02 23:21:10 +08:00
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</n-layout-footer>
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</n-layout>
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</n-layout>
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</n-layout>
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<n-layout style="height: 240px;">
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<n-layout-header mode="absolute" style="height: 64px;">
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2020-02-03 20:13:14 +08:00
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酷的页头
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2020-01-02 23:21:10 +08:00
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</n-layout-header>
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<n-layout mode="absolute" style="top: 64px;">
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<n-layout-sider
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mode="absolute"
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collapse-mode="transform"
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:collapsed-width="120"
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:width="240"
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:collapsed="collapsed"
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show-toggle-button
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@collapse="collapsed = true"
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@expand="collapsed = false"
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>
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2020-02-03 20:13:14 +08:00
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<n-h1>边栏</n-h1>
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2020-01-02 23:21:10 +08:00
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</n-layout-sider>
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<n-layout
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mode="absolute"
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>
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2020-02-03 20:13:14 +08:00
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<span>内容</span>
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2020-01-02 23:21:10 +08:00
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</n-layout>
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</n-layout>
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</n-layout>
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```
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```js
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export default {
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data () {
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return {
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collapsed: true
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}
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}
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}
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```
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