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108 lines
2.8 KiB
Markdown
108 lines
2.8 KiB
Markdown
## Layout 布局
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提供了`van-row`和`van-col`两个组件来进行行列布局
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### 使用指南
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``` javascript
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import { Row, Col } from 'vant';
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Vue.use(Row).use(Col);
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```
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### 代码演示
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#### 基本用法
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Layout 组件提供了`24列栅格`，通过在`Col`上添加`span`属性设置列所占的宽度百分比
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此外，添加`offset`属性可以设置列的偏移宽度，计算方式与 span 相同
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```html
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<van-row>
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<van-col span="8">span: 8</van-col>
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<van-col span="8">span: 8</van-col>
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<van-col span="8">span: 8</van-col>
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</van-row>
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<van-row>
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<van-col span="4">span: 4</van-col>
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<van-col span="10" offset="4">offset: 4, span: 10</van-col>
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</van-row>
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<van-row>
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<van-col offset="12" span="12">offset: 12, span: 12</van-col>
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</van-row>
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```
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#### 设置列元素间距
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通过`gutter`属性可以设置列元素之间的间距，默认间距为 0
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```html
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<van-row gutter="20">
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<van-col span="8">span: 8</van-col>
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<van-col span="8">span: 8</van-col>
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<van-col span="8">span: 8</van-col>
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</van-row>
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```
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#### Flex 布局
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将 `type` 属性设置为 flex 可以启用 flex 布局，便于进行灵活的对齐
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```html
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<!-- 左对齐 -->
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<van-row type="flex">
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<van-col span="6">span: 6</van-col>
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<van-col span="6">span: 6</van-col>
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<van-col span="6">span: 6</van-col>
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</van-row>
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<!-- 居中 -->
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<van-row type="flex" justify="center">
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<van-col span="6">span: 6</van-col>
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<van-col span="6">span: 6</van-col>
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<van-col span="6">span: 6</van-col>
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</van-row>
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<!-- 右对齐 -->
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<van-row type="flex" justify="end">
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<van-col span="6">span: 6</van-col>
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<van-col span="6">span: 6</van-col>
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<van-col span="6">span: 6</van-col>
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</van-row>
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<!-- 两端对齐 -->
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<van-row type="flex" justify="space-between">
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<van-col span="6">span: 6</van-col>
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<van-col span="6">span: 6</van-col>
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<van-col span="6">span: 6</van-col>
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</van-row>
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<!-- 每个元素的两侧间隔相等 -->
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<van-row type="flex" justify="space-around">
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<van-col span="6">span: 6</van-col>
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<van-col span="6">span: 6</van-col>
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<van-col span="6">span: 6</van-col>
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</van-row>
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```
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### API
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#### Row
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| 参数 | 说明 | 类型 | 默认值 | 版本 |
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|------|------|------|------|------|
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| type | 布局方式，可选值为`flex` | `String` | - | 1.1.9 |
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| gutter | 列元素之间的间距（单位为px） | `String | Number` | - | - |
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| tag | 自定义元素标签 | `String` | `div` | - |
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| justify | Flex 主轴对齐方式，可选值为 `end` `center` <br> `space-around` `space-between` | `String` | `start` | 1.1.9 |
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| align | Flex 交叉轴对齐方式，可选值为 `center` `bottom` | `String` | `top` | 1.1.9 |
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#### Col
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| 参数 | 说明 | 类型 | 默认值 | 版本 |
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|------|------|------|------|------|
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| span | 列元素宽度 | `String | Number` | - | - |
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| offset | 列元素偏移距离 | `String | Number` | - | - |
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| tag | 自定义元素标签 | `String` | `div` | - |
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