ion-content

shadow

Contents

• Fixed Content
• Interfaces
• Usage
• Properties
• Events
• Methods
• CSS Shadow Parts
• CSS Custom Properties
• Slots

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.

Fixed Content

In order to place elements outside of the scrollable area, slot="fixed" can be added to the element. This will absolutely position the element placing it in the top left. In order to place the element in a different position, style it using top, right, bottom, and left.

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;
}

Usage

Angular

<ion-content
  [scrollEvents]="true"
  (ionScrollStart)="logScrollStart()"
  (ionScroll)="logScrolling($event)"
  (ionScrollEnd)="logScrollEnd()">
    <h1>Main Content</h1>

    <div slot="fixed">
      <h1>Fixed Content</h1>
    </div>
</ion-content>

Javascript

<ion-content>
  <h1>Main Content</h1>

  <div slot="fixed">
    <h1>Fixed Content</h1>
  </div>
</ion-content>

var content = document.querySelector('ion-content');
content.scrollEvents = true;
content.addEventListener('ionScrollStart', () => console.log('scroll start'));
content.addEventListener('ionScroll', (ev) => console.log('scroll', ev.detail));
content.addEventListener('ionScrollEnd', () => console.log('scroll end'));

React

import React from 'react';
import { IonContent } from '@ionic/react';

const ContentExample: React.FC = () => (
  <IonContent
    scrollEvents={true}
    onIonScrollStart={() => {}}
    onIonScroll={() => {}}
    onIonScrollEnd={() => {}}>
      <h1>Main Content</h1>

      <div slot="fixed">
        <h1>Fixed Content</h1>
      </div>
  </IonContent>
);

Stencil

import { Component, h } from '@stencil/core';

@Component({
  tag: 'content-example',
  styleUrl: 'content-example.css'
})
export class ContentExample {
  logScrollStart() {
    console.log('Scroll start');
  }

  logScrolling(ev) {
    console.log('Scrolling', ev);
  }

  logScrollEnd() {
    console.log('Scroll end');
  }

  render() {
    return [
      <ion-content
        scrollEvents={true}
        onIonScrollStart={() => this.logScrollStart()}
        onIonScroll={(ev) => this.logScrolling(ev)}
        onIonScrollEnd={() => this.logScrollEnd()}>
          <h1>Main Content</h1>

          <div slot="fixed">
            <h1>Fixed Content</h1>
          </div>
      </ion-content>
    ];
  }
}

Vue

<template>
  <ion-content
    :scroll-events="true"
    @ionScrollStart="logScrollStart()"
    @ionScroll="logScrolling($event)"
    @ionScrollEnd="logScrollEnd()">
      <h1>Main Content</h1>

      <div slot="fixed">
        <h1>Fixed Content</h1>
      </div>
  </ion-content>
</template>

<script>
import { IonContent } from '@ionic/vue';
import { defineComponent } from 'vue';

export default defineComponent({
  components: { IonContent }
});
</script>

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	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, the 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	If you want to enable the content scrolling in the X axis, set this property to true.
Attribute	scroll-x
Type	boolean
Default	false

scrollY

Description	If you want to disable the content scrolling in the Y axis, set this property to false.
Attribute	scroll-y
Type	boolean
Default	true

Events

Name	Description
ionScroll	Emitted while scrolling. This event is disabled by default. Look at the property: scrollEvents
ionScrollEnd	Emitted when the scroll has ended.
ionScrollStart	Emitted when the scroll has started.

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

scrollToBottom

Description	Scroll to the bottom of the component.
Signature	scrollToBottom(duration?: number) => Promise<void>

scrollToPoint

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

scrollToTop

Description	Scroll to the top of the component.
Signature	scrollToTop(duration?: number) => Promise<void>

CSS Shadow Parts

Name	Description
background	The background of the content.
scroll	The scrollable container of the content.

CSS Custom Properties

Name	Description
--background	Background of the content
--color	Color of the content
--keyboard-offset	Keyboard offset of the content
--offset-bottom	Offset bottom of the content
--offset-top	Offset top of the content
--padding-bottom	Bottom padding of the content
--padding-end	Right padding if direction is left-to-right, and left padding if direction is right-to-left of the content
--padding-start	Left padding if direction is left-to-right, and right padding if direction is right-to-left of the content
--padding-top	Top padding of the content

Slots

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