diff options
Diffstat (limited to 'node_modules/is-number/README.md')
| -rw-r--r-- | node_modules/is-number/README.md | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/node_modules/is-number/README.md b/node_modules/is-number/README.md new file mode 100644 index 000000000..8395f9131 --- /dev/null +++ b/node_modules/is-number/README.md @@ -0,0 +1,103 @@ +# is-number [](http://badge.fury.io/js/is-number) [](https://travis-ci.org/jonschlinkert/is-number) + +> Returns true if the value is a number. comprehensive tests. + +To understand some of the rationale behind the decisions made in this library (and to learn about some oddities of number evaluation in JavaScript), [see this gist](https://gist.github.com/jonschlinkert/e30c70c713da325d0e81). + +## Install + +Install with [npm](https://www.npmjs.com/) + +```sh +$ npm i is-number --save +``` + +## Usage + +```js +var isNumber = require('is-number'); +``` + +### true + +See the [tests](./test.js) for more examples. + +```js +isNumber(5e3) //=> 'true' +isNumber(0xff) //=> 'true' +isNumber(-1.1) //=> 'true' +isNumber(0) //=> 'true' +isNumber(1) //=> 'true' +isNumber(1.1) //=> 'true' +isNumber(10) //=> 'true' +isNumber(10.10) //=> 'true' +isNumber(100) //=> 'true' +isNumber('-1.1') //=> 'true' +isNumber('0') //=> 'true' +isNumber('012') //=> 'true' +isNumber('0xff') //=> 'true' +isNumber('1') //=> 'true' +isNumber('1.1') //=> 'true' +isNumber('10') //=> 'true' +isNumber('10.10') //=> 'true' +isNumber('100') //=> 'true' +isNumber('5e3') //=> 'true' +isNumber(parseInt('012')) //=> 'true' +isNumber(parseFloat('012')) //=> 'true' +``` + +### False + +See the [tests](./test.js) for more examples. + +```js +isNumber('foo') //=> 'false' +isNumber([1]) //=> 'false' +isNumber([]) //=> 'false' +isNumber(function () {}) //=> 'false' +isNumber(Infinity) //=> 'false' +isNumber(NaN) //=> 'false' +isNumber(new Array('abc')) //=> 'false' +isNumber(new Array(2)) //=> 'false' +isNumber(new Buffer('abc')) //=> 'false' +isNumber(null) //=> 'false' +isNumber(undefined) //=> 'false' +isNumber({abc: 'abc'}) //=> 'false' +``` + +## Other projects + +* [even](https://www.npmjs.com/package/even): Get the even numbered items from an array. | [homepage](https://github.com/jonschlinkert/even) +* [is-even](https://www.npmjs.com/package/is-even): Return true if the given number is even. | [homepage](https://github.com/jonschlinkert/is-even) +* [is-odd](https://www.npmjs.com/package/is-odd): Returns true if the given number is odd. | [homepage](https://github.com/jonschlinkert/is-odd) +* [is-primitive](https://www.npmjs.com/package/is-primitive): Returns `true` if the value is a primitive. | [homepage](https://github.com/jonschlinkert/is-primitive) +* [kind-of](https://www.npmjs.com/package/kind-of): Get the native type of a value. | [homepage](https://github.com/jonschlinkert/kind-of) +* [odd](https://www.npmjs.com/package/odd): Get the odd numbered items from an array. | [homepage](https://github.com/jonschlinkert/odd) + +## Contributing + +Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](https://github.com/jonschlinkert/is-number/issues/new). + +## Run tests + +Install dev dependencies: + +```sh +$ npm i -d && npm test +``` + +## Author + +**Jon Schlinkert** + ++ [github/jonschlinkert](https://github.com/jonschlinkert) ++ [twitter/jonschlinkert](http://twitter.com/jonschlinkert) + +## License + +Copyright © 2015 Jon Schlinkert +Released under the MIT license. + +*** + +_This file was generated by [verb-cli](https://github.com/assemble/verb-cli) on November 22, 2015._
\ No newline at end of file |