# Row The **** component lays out child components horizontally. > **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 Row(value?:{space?: number | string }) **Parameters** | Name| Type| Mandatory| Description| | -------- | -------- | -------- | -------- | | space | string \| number | No| Horizontal spacing between two adjacent child components.
Since API version 9, this parameter does not take effect when it is set to a negative number.
Default value: **0**, in vp| ## Attributes | Name| Type| Description| | -------- | -------- | -------- | | alignItems | [VerticalAlign](ts-appendix-enums.md#verticalalign) | Alignment mode of child components in the vertical direction.
Default value: **VerticalAlign.Center**| | justifyContent8+ | [FlexAlign](ts-appendix-enums.md#flexalign) | Alignment mode of the child components in the horizontal direction.
FlexAlign.Start | ## Example ```ts // xxx.ets @Entry @Component struct RowExample { build() { Column({ space: 5 }) { // Set the horizontal spacing between two adjacent child components to 5. Text('space').fontSize(9).fontColor(0xCCCCCC).width('90%') Row({ space: 5 }) { Row().width('30%').height(50).backgroundColor(0xAFEEEE) Row().width('30%').height(50).backgroundColor(0x00FFFF) }.width('90%').height(107).border({ width: 1 }) // Set the alignment mode of the child components in the vertical direction. Text('alignItems(Bottom)').fontSize(9).fontColor(0xCCCCCC).width('90%') Row() { Row().width('30%').height(50).backgroundColor(0xAFEEEE) Row().width('30%').height(50).backgroundColor(0x00FFFF) }.width('90%').alignItems(VerticalAlign.Bottom).height('15%').border({ width: 1 }) Text('alignItems(Center)').fontSize(9).fontColor(0xCCCCCC).width('90%') Row() { Row().width('30%').height(50).backgroundColor(0xAFEEEE) Row().width('30%').height(50).backgroundColor(0x00FFFF) }.width('90%').alignItems(VerticalAlign.Center).height('15%').border({ width: 1 }) // Set the alignment mode of the child components in the horizontal direction. Text('justifyContent(End)').fontSize(9).fontColor(0xCCCCCC).width('90%') Row() { Row().width('30%').height(50).backgroundColor(0xAFEEEE) Row().width('30%').height(50).backgroundColor(0x00FFFF) }.width('90%').border({ width: 1 }).justifyContent(FlexAlign.End) Text('justifyContent(Center)').fontSize(9).fontColor(0xCCCCCC).width('90%') Row() { Row().width('30%').height(50).backgroundColor(0xAFEEEE) Row().width('30%').height(50).backgroundColor(0x00FFFF) }.width('90%').border({ width: 1 }).justifyContent(FlexAlign.Center) }.width('100%') } } ``` ![row](figures/row.png)