indexes-of

What is indexes-of?

The npm package 'indexes-of' is a utility that allows you to find all the indexes of a value within an array. It is a simple and focused package that provides a straightforward method for this specific task.

What are indexes-of's main functionalities?

Find indexes of a value in an array

This feature allows you to find all occurrences of a specific value within an array and returns an array of their indexes. In the code sample, it finds all indexes of the value '2' in the array.

const indexesOf = require('indexes-of');
const arr = [1, 2, 3, 2, 4];
const indexes = indexesOf(arr, 2); // returns [1, 3]

Other packages similar to indexes-of

array-find-index

This package provides a method similar to the ES6 Array.prototype.findIndex. It returns the index of the first element in the array that satisfies the provided testing function. Unlike 'indexes-of', it does not return all indexes, just the first one.

lodash.findindex

Lodash is a well-known utility library that includes a findIndex function. This function is similar to 'array-find-index' and returns the index of the first element that passes a test. Lodash offers a wide range of utilities, whereas 'indexes-of' is more specialized.

multimatch

This package extends the capabilities of matching patterns against strings or arrays. While it can be used to find indexes of matches in an array, it is more complex and feature-rich than 'indexes-of', which focuses solely on finding indexes of a value.

README

indexes-of

like Array/String#indexOf but return all the indexes in an array.

var indexesOf = require('indexes-of')

var twosIndexes = indexesOf([1, 2, 3, 4, 5, 4, 3, 2, 1], 2)

console.log(twosIndexes)

// [1, 7]

Haiku

• A 5 line module.
• But the tests are 40 lines.
• npm publish.

License

MIT