shoelace/docs/components/format-bytes.md

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# Format Bytes
[component-header:sl-format-bytes]
Formats a number as a human readable bytes value.
```html preview
<div class="format-bytes-overview">
The file is <sl-format-bytes value="1000"></sl-format-bytes> in size.
<br><br>
<sl-input type="number" value="1000" label="Number to Format" style="max-width: 180px;"></sl-input>
</div>
<script>
const container = document.querySelector('.format-bytes-overview');
const formatter = container.querySelector('sl-format-bytes');
const input = container.querySelector('sl-input');
input.addEventListener('sl-input', () => formatter.value = input.value || 0);
</script>
```
```jsx react
import { useState } from 'react';
import {
SlButton,
SlFormatBytes,
SlInput
} from '@shoelace-style/shoelace/dist/react';
const App = () => {
const [value, setValue] = useState(1000);
return (
<>
The file is <SlFormatBytes value={value} /> in size.
<br /><br />
<SlInput
type="number"
value={value}
label="Number to Format"
style={{ maxWidth: '180px' }}
onSlInput={event => setValue(event.target.value)}
/>
</>
);
};
```
## Examples
### Formatting Bytes
Set the `value` attribute to a number to get the value in bytes.
```html preview
<sl-format-bytes value="12"></sl-format-bytes><br>
<sl-format-bytes value="1200"></sl-format-bytes><br>
<sl-format-bytes value="1200000"></sl-format-bytes><br>
<sl-format-bytes value="1200000000"></sl-format-bytes>
```
```jsx react
import { SlFormatBytes } from '@shoelace-style/shoelace/dist/react';
const App = () => (
<>
<SlFormatBytes value="12" /><br />
<SlFormatBytes value="1200" /><br />
<SlFormatBytes value="1200000" /><br />
<SlFormatBytes value="1200000000" />
</>
);
```
### Formatting Bits
To get the value in bits, set the `unit` attribute to `bit`.
```html preview
<sl-format-bytes value="12" unit="bit"></sl-format-bytes><br>
<sl-format-bytes value="1200" unit="bit"></sl-format-bytes><br>
<sl-format-bytes value="1200000" unit="bit"></sl-format-bytes><br>
<sl-format-bytes value="1200000000" unit="bit"></sl-format-bytes>
```
```jsx react
import { SlFormatBytes } from '@shoelace-style/shoelace/dist/react';
const App = () => (
<>
<SlFormatBytes value="12" unit="bit" /><br />
<SlFormatBytes value="1200" unit="bit" /><br />
<SlFormatBytes value="1200000" unit="bit" /><br />
<SlFormatBytes value="1200000000" unit="bit" />
</>
);
```
### Localization
Use the `lang` attribute to set the number formatting locale.
```html preview
<sl-format-bytes value="12" lang="de"></sl-format-bytes><br>
<sl-format-bytes value="1200" lang="de"></sl-format-bytes><br>
<sl-format-bytes value="1200000" lang="de"></sl-format-bytes><br>
<sl-format-bytes value="1200000000" lang="de"></sl-format-bytes>
```
```jsx react
import { SlFormatBytes } from '@shoelace-style/shoelace/dist/react';
const App = () => (
<>
<SlFormatBytes value="12" lang="de" /><br />
<SlFormatBytes value="1200" lang="de" /><br />
<SlFormatBytes value="1200000" lang="de" /><br />
<SlFormatBytes value="1200000000" lang="de" />
</>
);
```
[component-metadata:sl-format-bytes]