count-array-values
Version:
Count the instances of each value in an array
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Markdown
# count-array-values [](https://travis-ci.org/zeke/count-array-values)
Count the instances of each value in an array, ignoring any non-string values.
## Installation
```sh
npm install count-array-values --save
```
## Usage
```js
var count = require('count-array-values')
count(['foo', 'bar', 'Bar', 451, 'bar', 'bar', 'baz', 'foo', null, undefined])
// [
// {value: 'bar', count: 3},
// {value: 'foo', count: 2},
// {value: 'Bar', count: 1},
// {value: 'baz', count: 1},
// ]
```
If you'd like to use a more relevant property name than `value`, specify it
as the second argument when calling the function:
```js
count(['apple', 'banana', 'apple'], 'fruit')
// [
// {fruit: 'apple', count: 2},
// {fruit: 'banana', count: 1}
// ]
```
You can also override the name of the `count` property:
```js
const packages = ['express', 'lodash', 'express', 'lodash', 'express', 'banana']
count(packages, 'package', 'dependents')
// [
// {package: 'express', dependents: 3},
// {package: 'lodash', dependents: 2},
// {package: 'banana', dependents: 1}
// ]
```
## Tests
```sh
npm install
npm test
```
## Dependencies
None
## Dev Dependencies
- [standard](https://github.com/feross/standard): JavaScript Standard Style
- [standard-markdown](https://github.com/zeke/standard-markdown): Test your Markdown files for Standard JavaScript Style™
- [tap-spec](https://github.com/scottcorgan/tap-spec): Formatted TAP output like Mocha's spec reporter
- [tape](https://github.com/substack/tape): tap-producing test harness for node and browsers
## License
MIT