ion-progress-bar
Progress bars inform users about the status of ongoing processes, such as loading an app, submitting a form, or saving updates. There are two types of progress bars: determinate and indeterminate.
Progress Type
Determinate
Determinate is the default type. It should be used when the percentage of an operation is known. The progress is represented by setting the value property. This can be used to show the progress increasing from 0 to 100% of the track.
If the buffer property is set, a buffer stream will show with animated circles to indicate activity. The value of the buffer property will also be represented by how much visible track there is. If the value of buffer is less than the value property, there will be no visible track. If buffer is equal to 1 then the buffer stream will be hidden.
Indeterminate
The indeterminate type should be used when it is unknown how long the process will take. The progress bar is not tied to the value, instead it continually slides along the track until the process is complete.
Usage
- Angular
- Javascript
- React
- Stencil
- Vue
<!-- Default Progressbar -->
<ion-progress-bar></ion-progress-bar>
<!-- Default Progressbar with 50 percent -->
<ion-progress-bar value="0.5"></ion-progress-bar>
<!-- Colorize Progressbar -->
<ion-progress-bar color="primary" value="0.5"></ion-progress-bar>
<ion-progress-bar color="secondary" value="0.5"></ion-progress-bar>
<!-- Other types -->
<ion-progress-bar value="0.25" buffer="0.5"></ion-progress-bar>
<ion-progress-bar type="indeterminate"></ion-progress-bar>
<ion-progress-bar type="indeterminate" reversed="true"></ion-progress-bar>
<!-- Default Progressbar -->
<ion-progress-bar></ion-progress-bar>
<!-- Default Progressbar with 50 percent -->
<ion-progress-bar value="0.5"></ion-progress-bar>
<!-- Colorize Progressbar -->
<ion-progress-bar color="primary" value="0.5"></ion-progress-bar>
<ion-progress-bar color="secondary" value="0.5"></ion-progress-bar>
<!-- Other types -->
<ion-progress-bar value="0.25" buffer="0.5"></ion-progress-bar>
<ion-progress-bar type="indeterminate"></ion-progress-bar>
<ion-progress-bar type="indeterminate" reversed="true"></ion-progress-bar>
import React from 'react';
import { IonProgressBar, IonContent } from '@ionic/react';
export const ProgressbarExample: React.FC = () => (
<IonContent>
{/*-- Default Progressbar --*/}
<IonProgressBar></IonProgressBar>
<br />
{/*-- Default Progressbar with 50 percent --*/}
<IonProgressBar value={0.5}></IonProgressBar>
<br />
{/*-- Colorize Progressbar --*/}
<IonProgressBar color="primary" value={0.5}></IonProgressBar>
<br />
<IonProgressBar color="secondary" value={0.5}></IonProgressBar>
<br />
{/*-- Other types --*/}
<IonProgressBar value={0.25} buffer={0.5}></IonProgressBar>
<br />
<IonProgressBar type="indeterminate"></IonProgressBar>
<br />
<IonProgressBar type="indeterminate" reversed={true}></IonProgressBar>
<br />
</IonContent>
);
import { Component, h } from '@stencil/core';
@Component({
tag: 'progress-bar-example',
styleUrl: 'progress-bar-example.css',
})
export class ProgressBarExample {
render() {
return [
// Default Progressbar
<ion-progress-bar></ion-progress-bar>,
// Default Progressbar with 50 percent
<ion-progress-bar value={0.5}></ion-progress-bar>,
// Colorize Progressbar
<ion-progress-bar color="primary" value={0.5}></ion-progress-bar>,
<ion-progress-bar color="secondary" value={0.5}></ion-progress-bar>,
// Other types
<ion-progress-bar value={0.25} buffer={0.5}></ion-progress-bar>,
<ion-progress-bar type="indeterminate"></ion-progress-bar>,
<ion-progress-bar type="indeterminate" reversed={true}></ion-progress-bar>,
];
}
}
<template>
<!-- Default Progressbar -->
<ion-progress-bar></ion-progress-bar>
<!-- Default Progressbar with 50 percent -->
<ion-progress-bar value="0.5"></ion-progress-bar>
<!-- Colorize Progressbar -->
<ion-progress-bar color="primary" value="0.5"></ion-progress-bar>
<ion-progress-bar color="secondary" value="0.5"></ion-progress-bar>
<!-- Other types -->
<ion-progress-bar value="0.25" buffer="0.5"></ion-progress-bar>
<ion-progress-bar type="indeterminate"></ion-progress-bar>
<ion-progress-bar type="indeterminate" reversed="true"></ion-progress-bar>
</template>
<script>
import { IonProgressBar } from '@ionic/vue';
import { defineComponent } from 'vue';
export default defineComponent({
components: { IonProgressBar },
});
</script>
Properties
buffer
| Description | If the buffer and value are smaller than 1, the buffer circles will show. The buffer should be between [0, 1]. |
| Attribute | buffer |
| Type | number |
| Default | 1 |
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 |
mode
| Description | The mode determines which platform styles to use. |
| Attribute | mode |
| Type | "ios" ｜ "md" |
| Default | undefined |
reversed
| Description | If true, reverse the progress bar direction. |
| Attribute | reversed |
| Type | boolean |
| Default | false |
type
| Description | The state of the progress bar, based on if the time the process takes is known or not. Default options are: "determinate" (no animation), "indeterminate" (animate from left to right). |
| Attribute | type |
| Type | "determinate" ｜ "indeterminate" |
| Default | 'determinate' |
value
| Description | The value determines how much of the active bar should display when the type is "determinate". The value should be between [0, 1]. |
| Attribute | value |
| Type | number |
| Default | 0 |
Events
No events available for this component.
Methods
No public methods available for this component.
CSS Shadow Parts
| Name | Description |
|---|---|
progress | The progress bar that shows the current value when type is "determinate" and slides back and forth when type is "indeterminate". |
stream | The animated circles that appear while buffering. This only shows when buffer is set and type is "determinate". |
track | The track bar behind the progress bar. If the buffer property is set and type is "determinate" the track will be the width of the buffer value. |
CSS Custom Properties
| Name | Description |
|---|---|
--background | Background of the progress track, or the buffer bar if buffer is set |
--buffer-background | DEPRECATED, use --background instead |
--progress-background | Background of the progress bar representing the current value |
Slots
No slots available for this component.