ion-content

shadow

The content component provides an easy to use content area with some useful methods to control the scrollable area. There should only be one content in a single view.

Content, along with many other Ionic components, can be customized to modify its padding, margin, and more using the global styles provided in the CSS Utilities or by individually styling it using CSS and the available CSS Custom Properties.

Basic Usage

Header & Footer

Content can be the only top-level component in a page, or it can be used alongside a header, footer, or both. When used with a header or footer, it will adjust its size to fill the remaining height.

Fullscreen Content

By default, content fills the space between a header and footer but does not go behind them. In certain cases, it may be desired to have the content scroll behind the header and footer, such as when the translucent property is set on either of them, or opacity is set on the toolbar. This can be achieved by setting the fullscreen property on the content to true.

Fixed Content

To place elements outside of the scrollable area, assign them to the fixed slot. Doing so will absolutely position the element to the top left of the content. In order to change the position of the element, it can be styled using the top, right, bottom, and left CSS properties.

Scroll Methods

Content provides methods that can be called to scroll the content to the bottom, top, or to a specific point. They can be passed a duration in order to smoothly transition instead of instantly changing the position.

Scroll Events

Scroll events are disabled by default for content due to performance. However, they can be enabled by setting scrollEvents to true. This is necessary before listening to any of the scroll events.

Console

Console messages will appear here when logged from the example above.

Theming

Colors

CSS Shadow Parts

CSS Custom Properties

Safe Area Padding

The content component will not automatically apply padding to any of its sides to account for the safe area. This is because the content component is often used in conjunction with other components that apply their own padding, such as headers and footers. However, if the content component is being used on its own, it may be desired to apply padding to the safe area. This can be done through CSS by using the --ion-safe-area-(dir) variables described in Application Variables.

The most common use case for this is to apply padding to the top of the content to account for the status bar. This can be done by setting the padding-top property to the value of the --ion-safe-area-top variable.

ion-content::part(scroll) {
  padding-top: var(--ion-safe-area-top, 0);
}

Another common use case is to apply padding to the left side of the content to account for the notch when the device is in landscape mode and the notch is on the left side. This can be done by setting the padding-left property to the value of the --ion-safe-area-left variable.

ion-content::part(scroll) {
  padding-left: var(--ion-safe-area-left, 0);
}

Interfaces

ScrollBaseDetail

interface ScrollBaseDetail {
  isScrolling: boolean;
}

ScrollDetail

interface ScrollDetail extends GestureDetail, ScrollBaseDetail {
  scrollTop: number;
  scrollLeft: number;
}

ScrollBaseCustomEvent

While not required, this interface can be used in place of the CustomEvent interface for stronger typing on the ionScrollStart and ionScrollEnd events.

interface ScrollBaseCustomEvent extends CustomEvent {
  detail: ScrollBaseDetail;
  target: HTMLIonContentElement;
}

ScrollCustomEvent

While not required, this interface can be used in place of the CustomEvent interface for stronger typing on the ionScroll event.

interface ScrollCustomEvent extends ScrollBaseCustomEvent {
  detail: ScrollDetail;
}

Properties

color

Description	The color to use from your application's color palette. Default options are: "primary", "secondary", "tertiary", "success", "warning", "danger", "light", "medium", and "dark". For more information on colors, see theming.
Attribute	color
Type	"danger" ｜ "dark" ｜ "light" ｜ "medium" ｜ "primary" ｜ "secondary" ｜ "success" ｜ "tertiary" ｜ "warning" ｜ string ｜ undefined
Default	undefined

forceOverscroll

Description	If true and the content does not cause an overflow scroll, the scroll interaction will cause a bounce. If the content exceeds the bounds of ionContent, nothing will change. Note, this does not disable the system bounce on iOS. That is an OS level setting.
Attribute	force-overscroll
Type	boolean ｜ undefined
Default	undefined

fullscreen

Description	If true, the content will scroll behind the headers and footers. This effect can easily be seen by setting the toolbar to transparent.
Attribute	fullscreen
Type	boolean
Default	false

scrollEvents

Description	Because of performance reasons, ionScroll events are disabled by default, in order to enable them and start listening from (ionScroll), set this property to true.
Attribute	scroll-events
Type	boolean
Default	false

scrollX

Description	X軸方向のコンテンツスクロールを有効にしたい場合は、このプロパティをtrueに設定します。
Attribute	scroll-x
Type	boolean
Default	false

scrollY

Description	Y軸方向のコンテンツスクロールを無効にしたい場合は、このプロパティにfalseを設定します。
Attribute	scroll-y
Type	boolean
Default	true

Events

Name	Description	Bubbles
ionScroll	Emitted while scrolling. This event is disabled by default. Set scrollEvents to true to enable.	true
ionScrollEnd	Emitted when the scroll has ended. This event is disabled by default. Set scrollEvents to true to enable.	true
ionScrollStart	Emitted when the scroll has started. This event is disabled by default. Set scrollEvents to true to enable.	true

Methods

getScrollElement

Description	Get the element where the actual scrolling takes place. This element can be used to subscribe to scroll events or manually modify scrollTop. However, it's recommended to use the API provided by ion-content: i.e. Using ionScroll, ionScrollStart, ionScrollEnd for scrolling events and scrollToPoint() to scroll the content into a certain point.
Signature	getScrollElement() => Promise<HTMLElement>

scrollByPoint

Description	コンポーネントを指定したX/Y距離だけスクロールさせる。
Signature	scrollByPoint(x: number, y: number, duration: number) => Promise<void>

scrollToBottom

Description	コンポーネントの一番下までスクロールします。
Signature	scrollToBottom(duration?: number) => Promise<void>

scrollToPoint

Description	コンポーネント内の指定したX/Y位置までスクロールします。
Signature	scrollToPoint(x: number ｜ undefined ｜ null, y: number ｜ undefined ｜ null, duration?: number) => Promise<void>

scrollToTop

Description	コンポーネントの上部にスクロールします。
Signature	scrollToTop(duration?: number) => Promise<void>

CSS Shadow Parts

Name	Description
background	コンテンツの背景です。
scroll	コンテンツのスクロール可能なコンテナ。

CSS Custom Properties

Name	Description
--background	コンテンツの背景
--color	コンテンツの色
--keyboard-offset	コンテンツのキーボードオフセット
--offset-bottom	コンテンツのオフセットボトム
--offset-top	コンテンツのオフセットトップ
--padding-bottom	コンテンツのBottom Padding
--padding-end	コンテンツの方向が左から右の場合はRight Padding、右から左の場合はLeft Paddingとなります。
--padding-start	コンテンツの方向が左から右の場合はLeft Padding、右から左の場合はRight Paddingとなります。
--padding-top	コンテンツのTop Padding

Slots

Name	Description
``	slotなしで提供される場合、コンテンツはスクロール可能な領域に配置されます。
fixed	スクロールしてはいけない固定コンテンツに使用する必要があります。