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Bootstrap/site/content/docs/5.2/components/progress.md
Patrick H. Lauke 8bb68b04b3
Add accNames to all progress bar examples (#36732)
Co-authored-by: Julien Déramond <juderamond@gmail.com>
Co-authored-by: Abdullah Alaqeel <abdullah.t.aqeel@gmail.com>
2022-07-13 23:31:15 +02:00

155 lines
7.2 KiB
Markdown

---
layout: docs
title: Progress
description: Documentation and examples for using Bootstrap custom progress bars featuring support for stacked bars, animated backgrounds, and text labels.
group: components
toc: true
---
## How it works
Progress components are built with two HTML elements, some CSS to set the width, and a few attributes. We don't use [the HTML5 `<progress>` element](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/progress), ensuring you can stack progress bars, animate them, and place text labels over them.
- We use the `.progress` as a wrapper to indicate the max value of the progress bar.
- We use the inner `.progress-bar` to indicate the progress so far.
- The `.progress-bar` requires an inline style, utility class, or custom CSS to set their width.
- The `.progress-bar` also requires some `role` and `aria` attributes to make it accessible, including an accessible name (using `aria-label`, `aria-labelledby`, or similar).
Put that all together, and you have the following examples.
{{< example >}}
<div class="progress">
<div class="progress-bar" role="progressbar" aria-label="Basic example" aria-valuenow="0" aria-valuemin="0" aria-valuemax="100"></div>
</div>
<div class="progress">
<div class="progress-bar" role="progressbar" aria-label="Basic example" style="width: 25%" aria-valuenow="25" aria-valuemin="0" aria-valuemax="100"></div>
</div>
<div class="progress">
<div class="progress-bar" role="progressbar" aria-label="Basic example" style="width: 50%" aria-valuenow="50" aria-valuemin="0" aria-valuemax="100"></div>
</div>
<div class="progress">
<div class="progress-bar" role="progressbar" aria-label="Basic example" style="width: 75%" aria-valuenow="75" aria-valuemin="0" aria-valuemax="100"></div>
</div>
<div class="progress">
<div class="progress-bar" role="progressbar" aria-label="Basic example" style="width: 100%" aria-valuenow="100" aria-valuemin="0" aria-valuemax="100"></div>
</div>
{{< /example >}}
Bootstrap provides a handful of [utilities for setting width]({{< docsref "/utilities/sizing" >}}). Depending on your needs, these may help with quickly configuring progress.
{{< example >}}
<div class="progress">
<div class="progress-bar w-75" role="progressbar" aria-label="Basic example" aria-valuenow="75" aria-valuemin="0" aria-valuemax="100"></div>
</div>
{{< /example >}}
## Labels
Add labels to your progress bars by placing text within the `.progress-bar`.
{{< example >}}
<div class="progress">
<div class="progress-bar" role="progressbar" aria-label="Example with label" style="width: 25%;" aria-valuenow="25" aria-valuemin="0" aria-valuemax="100">25%</div>
</div>
{{< /example >}}
## Height
We only set a `height` value on the `.progress`, so if you change that value the inner `.progress-bar` will automatically resize accordingly.
{{< example >}}
<div class="progress" style="height: 1px;">
<div class="progress-bar" role="progressbar" aria-label="Example 1px high" style="width: 25%;" aria-valuenow="25" aria-valuemin="0" aria-valuemax="100"></div>
</div>
<div class="progress" style="height: 20px;">
<div class="progress-bar" role="progressbar" aria-label="Example 20px high" style="width: 25%;" aria-valuenow="25" aria-valuemin="0" aria-valuemax="100"></div>
</div>
{{< /example >}}
## Backgrounds
Use background utility classes to change the appearance of individual progress bars.
{{< example >}}
<div class="progress">
<div class="progress-bar bg-success" role="progressbar" aria-label="Success example" style="width: 25%" aria-valuenow="25" aria-valuemin="0" aria-valuemax="100"></div>
</div>
<div class="progress">
<div class="progress-bar bg-info" role="progressbar" aria-label="Info example" style="width: 50%" aria-valuenow="50" aria-valuemin="0" aria-valuemax="100"></div>
</div>
<div class="progress">
<div class="progress-bar bg-warning" role="progressbar" aria-label="Warning example" style="width: 75%" aria-valuenow="75" aria-valuemin="0" aria-valuemax="100"></div>
</div>
<div class="progress">
<div class="progress-bar bg-danger" role="progressbar" aria-label="Danger example" style="width: 100%" aria-valuenow="100" aria-valuemin="0" aria-valuemax="100"></div>
</div>
{{< /example >}}
{{< callout info >}}
{{< partial "callout-warning-color-assistive-technologies.md" >}}
{{< /callout >}}
## Multiple bars
Include multiple progress bars in a progress component if you need.
{{< example >}}
<div class="progress">
<div class="progress-bar" role="progressbar" aria-label="Segment one" style="width: 15%" aria-valuenow="15" aria-valuemin="0" aria-valuemax="100"></div>
<div class="progress-bar bg-success" role="progressbar" aria-label="Segment two" style="width: 30%" aria-valuenow="30" aria-valuemin="0" aria-valuemax="100"></div>
<div class="progress-bar bg-info" role="progressbar" aria-label="Segment three" style="width: 20%" aria-valuenow="20" aria-valuemin="0" aria-valuemax="100"></div>
</div>
{{< /example >}}
## Striped
Add `.progress-bar-striped` to any `.progress-bar` to apply a stripe via CSS gradient over the progress bar's background color.
{{< example >}}
<div class="progress">
<div class="progress-bar progress-bar-striped" role="progressbar" aria-label="Default striped example" style="width: 10%" aria-valuenow="10" aria-valuemin="0" aria-valuemax="100"></div>
</div>
<div class="progress">
<div class="progress-bar progress-bar-striped bg-success" role="progressbar" aria-label="Success striped example" style="width: 25%" aria-valuenow="25" aria-valuemin="0" aria-valuemax="100"></div>
</div>
<div class="progress">
<div class="progress-bar progress-bar-striped bg-info" role="progressbar" aria-label="Info striped example" style="width: 50%" aria-valuenow="50" aria-valuemin="0" aria-valuemax="100"></div>
</div>
<div class="progress">
<div class="progress-bar progress-bar-striped bg-warning" role="progressbar" aria-label="Warning striped example" style="width: 75%" aria-valuenow="75" aria-valuemin="0" aria-valuemax="100"></div>
</div>
<div class="progress">
<div class="progress-bar progress-bar-striped bg-danger" role="progressbar" aria-label="Danger striped example" style="width: 100%" aria-valuenow="100" aria-valuemin="0" aria-valuemax="100"></div>
</div>
{{< /example >}}
## Animated stripes
The striped gradient can also be animated. Add `.progress-bar-animated` to `.progress-bar` to animate the stripes right to left via CSS3 animations.
{{< example >}}
<div class="progress">
<div class="progress-bar progress-bar-striped progress-bar-animated" role="progressbar" aria-label="Animated striped example" aria-valuenow="75" aria-valuemin="0" aria-valuemax="100" style="width: 75%"></div>
</div>
{{< /example >}}
## CSS
### Variables
{{< added-in "5.2.0" >}}
As part of Bootstrap's evolving CSS variables approach, progress bars now use local CSS variables on `.progress` for enhanced real-time customization. Values for the CSS variables are set via Sass, so Sass customization is still supported, too.
{{< scss-docs name="progress-css-vars" file="scss/_progress.scss" >}}
### Sass variables
{{< scss-docs name="progress-variables" file="scss/_variables.scss" >}}
### Keyframes
Used for creating the CSS animations for `.progress-bar-animated`. Included in `scss/_progress-bar.scss`.
{{< scss-docs name="progress-keyframes" file="scss/_progress.scss" >}}