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Version: v8 (beta)

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

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.

The fixedSlotPlacement prop is used to determine if items in the fixed slot are placed before or after other content in the DOM. When set to beforeContent, it ensures that when a user is navigating using the keyboard, they will reach items in the fixed slot before items in the main content. For example, this can be useful when the main content contains an infinitely-scrolling list, preventing a FAB or other fixed content from being reachable by pressing the tab key.

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

DescriptionThe 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.
Attributecolor
Type"danger" | "dark" | "light" | "medium" | "primary" | "secondary" | "success" | "tertiary" | "warning" | string | undefined
Defaultundefined

forceOverscroll

DescriptionIf 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.
Attributeforce-overscroll
Typeboolean | undefined
Defaultundefined

fullscreen

DescriptionIf true, the content will scroll behind the headers and footers. This effect can easily be seen by setting the toolbar to transparent.
Attributefullscreen
Typeboolean
Defaultfalse

scrollEvents

DescriptionBecause of performance reasons, ionScroll events are disabled by default, in order to enable them and start listening from (ionScroll), set this property to true.
Attributescroll-events
Typeboolean
Defaultfalse

scrollX

DescriptionIf you want to enable the content scrolling in the X axis, set this property to true.
Attributescroll-x
Typeboolean
Defaultfalse

scrollY

DescriptionIf you want to disable the content scrolling in the Y axis, set this property to false.
Attributescroll-y
Typeboolean
Defaulttrue

Events

NameDescriptionBubbles
ionScrollEmitted while scrolling. This event is disabled by default. Set scrollEvents to true to enable.true
ionScrollEndEmitted when the scroll has ended. This event is disabled by default. Set scrollEvents to true to enable.true
ionScrollStartEmitted when the scroll has started. This event is disabled by default. Set scrollEvents to true to enable.true

Methods

getScrollElement

DescriptionGet 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.
SignaturegetScrollElement() => Promise<HTMLElement>

scrollByPoint

DescriptionScroll by a specified X/Y distance in the component.
SignaturescrollByPoint(x: number, y: number, duration: number) => Promise<void>

scrollToBottom

DescriptionScroll to the bottom of the component.
SignaturescrollToBottom(duration?: number) => Promise<void>

scrollToPoint

DescriptionScroll to a specified X/Y location in the component.
SignaturescrollToPoint(x: number | undefined | null, y: number | undefined | null, duration?: number) => Promise<void>

scrollToTop

DescriptionScroll to the top of the component.
SignaturescrollToTop(duration?: number) => Promise<void>

CSS Shadow Parts

NameDescription
backgroundThe background of the content.
scrollThe scrollable container of the content.

CSS Custom Properties

NameDescription
--backgroundBackground of the content
--colorColor of the content
--keyboard-offsetKeyboard offset of the content
--offset-bottomOffset bottom of the content
--offset-topOffset top of the content
--padding-bottomBottom padding of the content
--padding-endRight padding if direction is left-to-right, and left padding if direction is right-to-left of the content
--padding-startLeft padding if direction is left-to-right, and right padding if direction is right-to-left of the content
--padding-topTop padding of the content

Slots

NameDescription
``Content is placed in the scrollable area if provided without a slot.
fixedShould be used for fixed content that should not scroll.