npm package: @stdlib/number-uint8-base-to-binary-string
Description: Return a string giving the literal bit representation of an unsigned 8-bit integer.
Author: The Stdlib Authors
Latest version: 0.2.3

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<details>
  <summary>
    About stdlib...
  </summary>
  <p>We believe in a future in which the web is a preferred environment for numerical computation. To help realize this future, we've built stdlib. stdlib is a standard library, with an emphasis on numerical and scientific computation, written in JavaScript (and C) for execution in browsers and in Node.js.</p>
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</details>

# Binary String

[![NPM version][npm-image]][npm-url] [![Build Status][test-image]][test-url] [![Coverage Status][coverage-image]][coverage-url] <!-- [![dependencies][dependencies-image]][dependencies-url] -->

> Return a string giving the literal bit representation of an [unsigned 8-bit integer][integer].

<section class="installation">

## Installation

```bash
npm install @stdlib/number-uint8-base-to-binary-string
```

</section>

<section class="usage">

## Usage

```javascript
var toBinaryString = require( '@stdlib/number-uint8-base-to-binary-string' );
```

#### toBinaryString( x )

Returns a `string` giving the literal bit representation of an [unsigned 8-bit integer][integer].

```javascript
var Uint8Array = require( '@stdlib/array-uint8' );

var a = new Uint8Array( [ 1, 4, 9 ] );

var str = toBinaryString( a[0] );
// returns '00000001'

str = toBinaryString( a[1] );
// returns '00000100'

str = toBinaryString( a[2] );
// returns '00001001'
```

</section>

<!-- /.usage -->

<section class="notes">

## Notes

-   Except for [typed arrays][typed-arrays], JavaScript does **not** provide native user support for [unsigned 8-bit integers][integer]. According to the [ECMAScript standard][ecma-262], `number` values correspond to [double-precision floating-point numbers][ieee754]. While this function is intended for [unsigned 8-bit integers][integer], the function will accept [floating-point][ieee754] values and represent the values **as if** they are [unsigned 8-bit integers][integer]. Accordingly, care **should** be taken to ensure that **only** nonnegative integer values less than `256` (`2^8`) are provided.

    ```javascript
    var str = toBinaryString( 1 );
    // returns '00000001'

    str = toBinaryString( 4 );
    // returns '00000100'

    str = toBinaryString( 9 );
    // returns '00001001'

    str = toBinaryString( 255 );
    // returns '11111111'
    ```

</section>

<!-- /.notes -->

<section class="examples">

## Examples

<!-- eslint no-undef: "error" -->

```javascript
var Uint8Array = require( '@stdlib/array-uint8' );
var MAX_UINT8 = require( '@stdlib/constants-uint8-max' );
var toBinaryString = require( '@stdlib/number-uint8-base-to-binary-string' );

var x;
var y;
var b;
var i;

x = new Uint8Array( MAX_UINT8+1 );
for ( i = 0; i < x.length; i++ ) {
    x[ i ] = i;
}

// Convert unsigned 8-bit integers to literal bit representations...
for ( i = 0; i < x.length; i++ ) {
    b = toBinaryString( x[i] );
    y = parseInt( b, 2 );
    console.log( 'x: %d, b: %s, y: %d', x[i], b, y );
}
```

</section>

<!-- /.examples -->

<!-- Section for related `stdlib` packages. Do not manually edit this section, as it is automatically populated. -->

<section class="related">

* * *

## See Also

-   <span class="package-name">[`@stdlib/number-float64/base/to-binary-string`][@stdlib/number/float64/base/to-binary-string]</span><span class="delimiter">: </span><span class="description">return a string giving the literal bit representation of a double-precision floating-point number.</span>

</section>

<!-- /.related -->

<!-- Section for all links. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->


<section class="main-repo" >

* * *

## Notice

This package is part of [stdlib][stdlib], a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.

For more information on the project, filing bug reports and feature requests, and guidance on how to develop [stdlib][stdlib], see the main project [repository][stdlib].

#### Community

[![Chat][chat-image]][chat-url]

---

## License

See [LICENSE][stdlib-license].


## Copyright

Copyright &copy; 2016-2026. The Stdlib [Authors][stdlib-authors].

</section>

<!-- /.stdlib -->

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[umd]: https://github.com/umdjs/umd
[es-module]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Modules

[deno-url]: https://github.com/stdlib-js/number-uint8-base-to-binary-string/tree/deno
[deno-readme]: https://github.com/stdlib-js/number-uint8-base-to-binary-string/blob/deno/README.md
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[esm-url]: https://github.com/stdlib-js/number-uint8-base-to-binary-string/tree/esm
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[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/number-uint8-base-to-binary-string/main/LICENSE

[integer]: https://en.wikipedia.org/wiki/Integer_%28computer_science%29

[typed-arrays]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Typed_arrays

[ecma-262]: http://www.ecma-international.org/ecma-262/5.1/#sec-4.3.19

[ieee754]: https://en.wikipedia.org/wiki/IEEE_754-1985

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[@stdlib/number/float64/base/to-binary-string]: https://www.npmjs.com/package/@stdlib/number-float64-base-to-binary-string

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</section>

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