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index-of

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  • License MIT

Get the index of the first element in an array that returns truthy for the given value, using strict equality for comparisons.

Package Exports

  • index-of

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (index-of) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

index-of NPM version

Get the index of the first element in an array that returns truthy for the given value, using strict equality for comparisons.

Install

Install with npm

$ npm i index-of --save

Install with bower

$ bower install index-of --save

Usage

var indexOf = require('index-of');

indexOf(['a', 'b', 'c'], 'b');
//=> 1

indexOf(['a', 'b', 'c'], 'd');
//=> -1

indexOf(['a', 'b', 'c', 'a', 'b', 'c'], 'b', 2);
//=> 4

Other object utils:

  • array-every: Returns true if the callback returns truthy for all elements in the given array.
  • array-slice: Array-slice method. Slices array from the start index up to, but not including, the end… more
  • array-unique: Return an array free of duplicate values. Fastest ES5 implementation.
  • filter-array: Iterates over the elements in an array, returning an array with only the elements for… more

Running tests

Install dev dependencies:

$ npm i -d && npm test

Contributing

Pull requests and stars are always welcome. For bugs and feature requests, please create an issue

Author

Jon Schlinkert

License

Copyright © 2015 Jon Schlinkert Released under the MIT license.

This file was generated by verb-cli on June 22, 2015.