https://github.com/smakss/random-array-element

Selects a random array element without repetition.
https://github.com/smakss/random-array-element

array arrays dom hacktoberfest javascript npm npm-install npm-package random random-array-element random-generation random-without-repetition randomizer select-random yarn yarn-package yarn-packages

Last synced: 6 days ago
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Selects a random array element without repetition.

• Host: GitHub
• URL: https://github.com/smakss/random-array-element
• Owner: SMAKSS
• License: mit
• Created: 2020-05-04T19:28:58.000Z (over 4 years ago)
• Default Branch: master
• Last Pushed: 2024-02-16T23:10:36.000Z (8 months ago)
• Last Synced: 2024-09-22T21:02:15.948Z (11 days ago)
• Topics: array, arrays, dom, hacktoberfest, javascript, npm, npm-install, npm-package, random, random-array-element, random-generation, random-without-repetition, randomizer, select-random, yarn, yarn-package, yarn-packages
• Language: TypeScript
• Homepage: https://www.npmjs.com/package/@smakss/random-array-element
• Size: 263 KB
• Stars: 4
• Watchers: 1
• Forks: 0
• Open Issues: 5
• Metadata Files:
  • Readme: Readme.md
  • Contributing: CONTRIBUTING.md
  • License: LICENSE
  • Code of conduct: CODE_OF_CONDUCT.md

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README

        
# Random Array Element without Repetition

![npm](https://img.shields.io/npm/v/@smakss/random-array-element) ![NPM](https://img.shields.io/npm/l/@smakss/random-array-element) ![npm](https://img.shields.io/npm/dt/@smakss/random-array-element) ![npm bundle size (scoped)](https://img.shields.io/bundlephobia/min/@smakss/random-array-element)

Selecting a random element from an array is simple with `Math.random()`. However, if you need to ensure that each element is only selected once until all elements have been chosen, `@smakss/random-array-element` is the ideal solution. Utilizing closures, this package allows you to initialize a function once and then repeatedly obtain unique, randomly-selected elements from your array, without repeats until the array is exhausted.

## Demo

You can check the [working demo](https://runkit.com/smakss/random-array-element) on RunKit.

or

[![View @smakss/random-array-element](https://codesandbox.io/static/img/play-codesandbox.svg)](https://codesandbox.io/s/smakss-random-array-element-7yizos?fontsize=14&hidenavigation=1&theme=dark)

## Installation

Install the package using npm or Yarn:

```bash

npm i @smakss/random-array-element

# or

yarn add @smakss/random-array-element

```

## Usage

To include it with CommonJS module you can do this:

```js

const randomArrayElement = require('@smakss/random-array-element');

```

For ECMAScript modules:

```js

import randomArrayElement from '@smakss/random-array-element';

```

Example usage:

```js

// Initialize once for an array

const getRandomElement = randomArrayElement(['apple', 'banana', 'cherry']);

console.log(getRandomElement()); // Result: 'banana' (example output)

console.log(getRandomElement()); // Result: 'apple' (example output)

// ...after all items have been returned, it resets.

console.log(getRandomElement()); // Result: 'cherry' (example output)

// ...continues to return a new random item.

```

If an empty or non-array input is passed, the function will return -1, indicating no selection can be made:

```js

const getRandomElement = randomArrayElement([]);

console.log(getRandomElement()); // Result: -1

```

## Contributing

Contributions are welcome! Please see [CONTRIBUTING.md](./CONTRIBUTING.md) for guidelines and details.

## Code of Conduct

To ensure a welcoming and safe community, our [Code of Conduct](./CODE_OF_CONDUCT.md) outlines expected behaviors for all participants.