155 lines
3.5 KiB
Markdown
Executable File
155 lines
3.5 KiB
Markdown
Executable File
# kind-of [](http://badge.fury.io/js/kind-of) [](https://travis-ci.org/jonschlinkert/kind-of)
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> Get the native type of a value.
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## Install with [npm](npmjs.org)
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```bash
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npm i kind-of --save
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```
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## Usage
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```js
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var kindOf = require('kind-of');
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kindOf(undefined);
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//=> 'undefined'
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kindOf(null);
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//=> 'null'
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kindOf(true);
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//=> 'boolean'
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kindOf(false);
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//=> 'boolean'
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kindOf(new Boolean(true));
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//=> 'boolean'
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kindOf(new Buffer(''));
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//=> 'buffer'
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kindOf(42);
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//=> 'number'
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kindOf(new Number(42));
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//=> 'number'
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kindOf("string");
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//=> 'string'
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kindOf(arguments);
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//=> 'arguments'
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kindOf({});
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//=> 'object'
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kindOf(new Test());
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//=> 'object'
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kindOf(new Date());
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//=> 'date'
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kindOf([]);
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//=> 'array'
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kindOf([1, 2, 3]);
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//=> 'array'
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kindOf(new Array());
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//=> 'array'
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kindOf(/[\s\S]+/);
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//=> 'regexp'
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kindOf(new RegExp('^' + 'foo$'));
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//=> 'regexp'
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kindOf(function () {});
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//=> 'function'
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kindOf(new Function());
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//=> 'function'
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```
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## Run tests
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Install dev dependencies:
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```bash
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npm i -d && npm test
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```
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## Benchmarks
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Benchmarked against [typeof](http://github.com/CodingFu/typeof) and [type-of](https://github.com/ForbesLindesay/type-of).
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```bash
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#1: array.js
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kind-of x 21,578,944 ops/sec ±1.01% (97 runs sampled)
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(lib) type-of x 4,593,840 ops/sec ±0.76% (92 runs sampled)
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(lib) typeof x 5,786,776 ops/sec ±0.71% (97 runs sampled)
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#2: boolean.js
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kind-of x 25,189,600 ops/sec ±0.60% (97 runs sampled)
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(lib) type-of x 2,751,076 ops/sec ±0.78% (100 runs sampled)
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(lib) typeof x 4,390,312 ops/sec ±0.61% (99 runs sampled)
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#3: date.js
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kind-of x 8,862,303 ops/sec ±0.77% (99 runs sampled)
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(lib) type-of x 6,239,662 ops/sec ±0.67% (94 runs sampled)
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(lib) typeof x 6,180,922 ops/sec ±0.59% (97 runs sampled)
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#4: function.js
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kind-of x 19,685,336 ops/sec ±1.67% (95 runs sampled)
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(lib) type-of x 6,648,551 ops/sec ±0.93% (95 runs sampled)
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(lib) typeof x 6,631,967 ops/sec ±1.05% (92 runs sampled)
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#5: null.js
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kind-of x 24,155,010 ops/sec ±0.95% (91 runs sampled)
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(lib) type-of x 12,854,583 ops/sec ±0.69% (94 runs sampled)
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(lib) typeof x 8,182,952 ops/sec ±0.48% (99 runs sampled)
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#6: number.js
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kind-of x 20,993,521 ops/sec ±0.37% (98 runs sampled)
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(lib) type-of x 2,112,716 ops/sec ±0.73% (96 runs sampled)
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(lib) typeof x 4,492,943 ops/sec ±0.68% (96 runs sampled)
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#7: object.js
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kind-of x 3,686,169 ops/sec ±0.85% (96 runs sampled)
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(lib) type-of x 3,661,833 ops/sec ±0.73% (98 runs sampled)
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(lib) typeof x 6,159,847 ops/sec ±0.72% (98 runs sampled)
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#8: regex.js
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kind-of x 10,780,535 ops/sec ±0.75% (95 runs sampled)
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(lib) type-of x 5,380,781 ops/sec ±0.83% (92 runs sampled)
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(lib) typeof x 5,852,558 ops/sec ±0.67% (95 runs sampled)
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#9: string.js
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kind-of x 19,713,570 ops/sec ±0.69% (91 runs sampled)
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(lib) type-of x 4,017,753 ops/sec ±0.85% (98 runs sampled)
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(lib) typeof x 4,370,984 ops/sec ±0.62% (100 runs sampled)
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#10: undef.js
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kind-of x 23,250,387 ops/sec ±0.88% (91 runs sampled)
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(lib) type-of x 13,725,183 ops/sec ±0.62% (91 runs sampled)
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(lib) typeof x 20,549,334 ops/sec ±0.74% (97 runs sampled)
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```
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## Author
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**Jon Schlinkert**
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+ [github/jonschlinkert](https://github.com/jonschlinkert)
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+ [twitter/jonschlinkert](http://twitter.com/jonschlinkert)
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## License
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Copyright (c) 2014-2015 Jon Schlinkert
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Released under the MIT license
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***
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_This file was generated by [verb](https://github.com/assemble/verb) on February 09, 2015._ |