# Column

The **<Column\>** component lays out child components vertically.

>  **NOTE**
>
>  This component is supported since API version 7. Updates will be marked with a superscript to indicate their earliest API version.


## Child Components

Supported


## APIs

Column(value?: {space?: string | number})

Since API version 9, this API is supported in ArkTS widgets.

**Parameters**

| Name| Type| Mandatory| Description|
| -------- | -------- | -------- | -------- |
| space | string \| number | No| Vertical spacing between two adjacent child components.<br>Since API version 9, this parameter does not take effect when it is set to a negative number or **justifyContent** is set to **FlexAlign.SpaceBetween**, **FlexAlign.SpaceAround** or **FlexAlign.SpaceEvenly**.<br>Default value: **0**<br>**NOTE**<br>The value can be a number greater than or equal to 0 or a string that can be converted to a number.|

## Attributes

In addition to the [universal attributes](ts-universal-attributes-size.md), the following attributes are supported.

| Name| Type| Description|
| -------- | -------- | -------- |
| alignItems | [HorizontalAlign](ts-appendix-enums.md#horizontalalign) | Alignment mode of the child components in the horizontal direction.<br>Default value: **HorizontalAlign.Center**<br>Since API version 9, this API is supported in ArkTS widgets.|
| justifyContent<sup>8+</sup> | [FlexAlign](ts-appendix-enums.md#flexalign) | Alignment mode of the child components in the vertical direction.<br>Default value: **FlexAlign.Start**<br>Since API version 9, this API is supported in ArkTS widgets.|

## Example

```ts
// xxx.ets
@Entry
@Component
struct ColumnExample {
  build() {
    Column() {
      // Set the vertical spacing between two adjacent child components to 5.
      Text('space').fontSize(9).fontColor(0xCCCCCC).width('90%')
      Column({ space: 5 }) {
        Column().width('100%').height(30).backgroundColor(0xAFEEEE)
        Column().width('100%').height(30).backgroundColor(0x00FFFF)
      }.width('90%').height(100).border({ width: 1 })

      // Set the alignment mode of the child components in the horizontal direction.
      Text('alignItems(Start)').fontSize(9).fontColor(0xCCCCCC).width('90%')
      Column() {
        Column().width('50%').height(30).backgroundColor(0xAFEEEE)
        Column().width('50%').height(30).backgroundColor(0x00FFFF)
      }.alignItems(HorizontalAlign.Start).width('90%').border({ width: 1 })

      Text('alignItems(End)').fontSize(9).fontColor(0xCCCCCC).width('90%')
      Column() {
        Column().width('50%').height(30).backgroundColor(0xAFEEEE)
        Column().width('50%').height(30).backgroundColor(0x00FFFF)
      }.alignItems(HorizontalAlign.End).width('90%').border({ width: 1 })

      Text('alignItems(Center)').fontSize(9).fontColor(0xCCCCCC).width('90%')
      Column() {
        Column().width('50%').height(30).backgroundColor(0xAFEEEE)
        Column().width('50%').height(30).backgroundColor(0x00FFFF)
      }.alignItems(HorizontalAlign.Center).width('90%').border({ width: 1 })
      
      // Set the alignment mode of the child components in the vertical direction.
      Text('justifyContent(Center)').fontSize(9).fontColor(0xCCCCCC).width('90%')
      Column() {
        Column().width('90%').height(30).backgroundColor(0xAFEEEE)
        Column().width('90%').height(30).backgroundColor(0x00FFFF)
      }.height(100).border({ width: 1 }).justifyContent(FlexAlign.Center)

      Text('justifyContent(End)').fontSize(9).fontColor(0xCCCCCC).width('90%')
      Column() {
        Column().width('90%').height(30).backgroundColor(0xAFEEEE)
        Column().width('90%').height(30).backgroundColor(0x00FFFF)
      }.height(100).border({ width: 1 }).justifyContent(FlexAlign.End)
    }.width('100%').padding({ top: 5 })
  }
}
```

![Column](figures/Column.png)