Validates if a value is a NaN primitive.
npm install validate.io-nan-primitivenan-primitive
===
[![NPM version][npm-image]][npm-url] [![Build Status][travis-image]][travis-url] [![Coverage Status][coveralls-image]][coveralls-url] [![Dependencies][dependencies-image]][dependencies-url]
> Validates if a value is a NaN primitive.
`` bash`
$ npm install validate.io-nan-primitive
For use in the browser, use browserify.
` javascript`
var isnan = require( 'validate.io-nan-primitive' );
#### isnan( value )
Validates if a value is a NaN primitive.
` javascript
var value = NaN;
var bool = isnan( value );
// returns true
`
__Note__: the method first validates that a value is numeric before validating if a value is NaN. For non-numeric values, the method returns false.
` javascript
var isnan = require( 'validate.io-nan-primitive' );
console.log( isnan( NaN ) );
// returns true
console.log( isnan( new Number( NaN ) ) );
// returns false
console.log( isnan( '5' ) );
// returns false
console.log( isnan( 5 ) );
// returns false
`
To run the example code from the top-level application directory,
` bash`
$ node ./examples/index.js
Unit tests use the Mocha test framework with Chai assertions. To run the tests, execute the following command in the top-level application directory:
` bash`
$ make test
All new feature development should have corresponding unit tests to validate correct functionality.
This repository uses Istanbul as its code coverage tool. To generate a test coverage report, execute the following command in the top-level application directory:
` bash`
$ make test-cov
Istanbul creates a ./reports/coverage directory. To access an HTML version of the report,
` bash``
$ make view-cov
---
Copyright © 2015. Athan Reines.
[npm-image]: http://img.shields.io/npm/v/validate.io-nan-primitive.svg
[npm-url]: https://npmjs.org/package/validate.io-nan-primitive
[travis-image]: http://img.shields.io/travis/validate-io/nan-primitive/master.svg
[travis-url]: https://travis-ci.org/validate-io/nan-primitive
[coveralls-image]: https://img.shields.io/coveralls/validate-io/nan-primitive/master.svg
[coveralls-url]: https://coveralls.io/r/validate-io/nan-primitive?branch=master
[dependencies-image]: http://img.shields.io/david/validate-io/nan-primitive.svg
[dependencies-url]: https://david-dm.org/validate-io/nan-primitive
[dev-dependencies-image]: http://img.shields.io/david/dev/validate-io/nan-primitive.svg
[dev-dependencies-url]: https://david-dm.org/dev/validate-io/nan-primitive
[github-issues-image]: http://img.shields.io/github/issues/validate-io/nan-primitive.svg
[github-issues-url]: https://github.com/validate-io/nan-primitive/issues