弹性布局 Flex

设置组件之间的间距，设置各种水平、垂直对齐方式

与 Space 组件的区别

• Space 为内联元素提供间距，其本身会为每一个子元素添加包裹元素用于内联对齐。适用于行、列中多个子元素的等距排列。
• Flex 为块级元素提供间距，其本身不会添加包裹元素。适用于垂直或水平方向上的子元素布局，并提供了更多的灵活性和控制能力。

基本使用

horizontal

vertical

Show Code

<script setup lang="ts">
import { ref } from 'vue'
const directionOptions = ref([
        {
          label: 'horizontal',
          value: 'horizontal'
        },
        {
          label: 'vertical',
          value: 'vertical'
        }
      ])
const direction = ref('horizontal')
const baseStyle = {
  width: '25%',
  height: '54px'
}
</script>
<template>
  <Flex vertical>
    <Radio :options="directionOptions" v-model:value="direction" />
    <Flex :vertical="direction === 'vertical'">
      <div
        v-for="n in 4" :key="n"
        :style="{ ...baseStyle, background: `${n % 2 ? '#1677ffbf' : '#1677ff'}` }"
      />
    </Flex>
  </Flex>
</template>

对齐方式

Select justify :

flex-start

center

flex-end

space-between

space-around

space-evenly

Select align :

flex-start

center

flex-end

Primary

Primary

Primary

Primary

Show Code

<script setup lang="ts">
const justifyOptions = ref([
        {
          label: 'flex-start',
          value: 'flex-start'
        },
        {
          label: 'center',
          value: 'center'
        },
        {
          label: 'flex-end',
          value: 'flex-end'
        },
        {
          label: 'space-between',
          value: 'space-between'
        },
        {
          label: 'space-around',
          value: 'space-around'
        },
        {
          label: 'space-evenly',
          value: 'space-evenly'
        }
      ])
const alignOptions = ref([
        {
          label: 'flex-start',
          value: 'flex-start'
        },
        {
          label: 'center',
          value: 'center'
        },
        {
          label: 'flex-end',
          value: 'flex-end'
        }
      ])
const justify = ref(justifyOptions.value[0].value)
const alignItems = ref(alignOptions.value[0].value)
const boxStyle = {
  width: '100%',
  height: '120px',
  borderRadius: '6px',
  border: '1px solid #40a9ff'
}
</script>
<template>
  <Flex align="start" vertical>
    <p>Select justify :</p>
    <Radio v-model:value="justify" button :options="justifyOptions" />
    <p>Select align :</p>
    <Radio v-model:value="alignItems" button :options="alignOptions" />
    <Flex :style="{ ...boxStyle }" :justify="justify" :align="alignItems">
      <Button type="primary">Primary</Button>
      <Button type="primary">Primary</Button>
      <Button type="primary">Primary</Button>
      <Button type="primary">Primary</Button>
    </Flex>
  </Flex>
</template>

设置间隙

small

middle

large

customize

Primary

Default

Dashed

Link

Show Code

<script setup lang="ts">
const gapOptions = ref([
        {
          label: 'small',
          value: 'small'
        },
        {
          label: 'middle',
          value: 'middle'
        },
        {
          label: 'large',
          value: 'large'
        },
        {
          label: 'customize',
          value: 'customize'
        }
      ])
const gapSize = ref('middle')
const customGapSize = ref(16)
</script>
<template>
  <Flex vertical>
    <Radio :options="gapOptions" v-model:value="gapSize" />
    <Slider v-if="gapSize === 'customize'" v-model:value="customGapSize" />
    <Flex :gap="gapSize !== 'customize' ? gapSize : customGapSize">
      <Button type="primary">Primary</Button>
      <Button>Default</Button>
      <Button type="dashed">Dashed</Button>
      <Button type="link">Link</Button>
    </Flex>
  </Flex>
</template>

自动换行

Button

Button

Button

Button

Button

Button

Button

Button

Button

Button

Button

Button

Button

Button

Button

Button

Show Code

<template>
  <Flex wrap="wrap" :width="600" :gap="[8, 16]">
    <Button v-for="n in 16" :key="n" type="primary">Button</Button>
  </Flex>
</template>

APIs

Flex

参数	说明	类型	默认值
width	弹性区域总宽度，单位 px	string | number	'auto'
vertical	flex 主轴的方向是否垂直，vertical 使用 flex-direction: column	boolean	false
wrap	设置元素单行显示还是多行显示；参考 flex-wrap	'nowrap' | 'wrap' | 'wrap-reverse'	'nowrap'
justify	设置元素在主轴方向上的对齐方式；参考 justify-content	string	'normal'
align	设置元素在交叉轴方向上的对齐方式；参考 align-items	string	'normal'
gap	设置网格之间的间隙，数组时表示: [水平间距, 垂直间距]	number | number[] | 'small' | 'middle' | 'large'	'middle'