95 lines
3.1 KiB
Markdown
95 lines
3.1 KiB
Markdown
|
# object.reduce [](https://www.npmjs.com/package/object.reduce) [](https://npmjs.org/package/object.reduce) [](https://travis-ci.org/jonschlinkert/object.reduce)
|
||
|
|
|
||
|
|
> Reduces an object to a value that is the accumulated result of running each property in the object through a callback.
|
||
|
|
|
||
|
|
## Install
|
||
|
|
|
||
|
|
Install with [npm](https://www.npmjs.com/):
|
||
|
|
|
||
|
|
```sh
|
||
|
|
$ npm install --save object.reduce
|
||
|
|
```
|
||
|
|
|
||
|
|
Install with [yarn](https://yarnpkg.com):
|
||
|
|
|
||
|
|
```sh
|
||
|
|
$ yarn add object.reduce
|
||
|
|
```
|
||
|
|
|
||
|
|
Install with [bower](https://bower.io/)
|
||
|
|
|
||
|
|
```sh
|
||
|
|
$ bower install object.reduce --save
|
||
|
|
```
|
||
|
|
|
||
|
|
## Usage
|
||
|
|
|
||
|
|
the initial value (or value from the previous callback call), the `value` of the current property, the `key` of the current property, and the `object` over which the function is iterating. Node.js/JavaScript utility.)_
|
||
|
|
|
||
|
|
**Params**
|
||
|
|
|
||
|
|
* `object` **{Object}**: The object to iterate over (the iteratee)
|
||
|
|
* `fn` **{Function}**: The function invoked per iteration.
|
||
|
|
* `init` **{Object}**: The initial value to use for the accumulator.
|
||
|
|
* `thisArg` **{Object}**: (optional) Object to use as the invocation context for the iterator (expose as `this` inside the iterator)
|
||
|
|
|
||
|
|
Executes the given callback `fn` once for each own enumerable property in the object. The callback receives the following arguments:
|
||
|
|
|
||
|
|
* `acc`: the initial value (or value from the previous callback call),
|
||
|
|
* `value`: the of the current property,
|
||
|
|
* `key`: the of the current property, and
|
||
|
|
* the original `object` over which the function is iterating.
|
||
|
|
|
||
|
|
**Example**
|
||
|
|
|
||
|
|
```js
|
||
|
|
var reduce = require('object.reduce');
|
||
|
|
var a = {a: 'foo', b: 'bar', c: 'baz'};
|
||
|
|
|
||
|
|
reduce(a, function(acc, value, key, obj) {
|
||
|
|
acc[key] = value.toUpperCase();
|
||
|
|
return acc;
|
||
|
|
}, {});
|
||
|
|
|
||
|
|
//=> {a: 'FOO', b: 'BAR', c: 'BAZ'};
|
||
|
|
```
|
||
|
|
|
||
|
|
## About
|
||
|
|
|
||
|
|
### Contributing
|
||
|
|
|
||
|
|
Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new).
|
||
|
|
|
||
|
|
### Building docs
|
||
|
|
|
||
|
|
_(This project's readme.md is generated by [verb](https://github.com/verbose/verb-generate-readme), please don't edit the readme directly. Any changes to the readme must be made in the [.verb.md](.verb.md) readme template.)_
|
||
|
|
|
||
|
|
To generate the readme, run the following command:
|
||
|
|
|
||
|
|
```sh
|
||
|
|
$ npm install -g verbose/verb#dev verb-generate-readme && verb
|
||
|
|
```
|
||
|
|
|
||
|
|
### Running tests
|
||
|
|
|
||
|
|
Running and reviewing unit tests is a great way to get familiarized with a library and its API. You can install dependencies and run tests with the following command:
|
||
|
|
|
||
|
|
```sh
|
||
|
|
$ npm install && npm test
|
||
|
|
```
|
||
|
|
|
||
|
|
### Author
|
||
|
|
|
||
|
|
**Jon Schlinkert**
|
||
|
|
|
||
|
|
* [github/jonschlinkert](https://github.com/jonschlinkert)
|
||
|
|
* [twitter/jonschlinkert](https://twitter.com/jonschlinkert)
|
||
|
|
|
||
|
|
### License
|
||
|
|
|
||
|
|
Copyright © 2017, [Jon Schlinkert](https://github.com/jonschlinkert).
|
||
|
|
Released under the [MIT License](LICENSE).
|
||
|
|
|
||
|
|
***
|
||
|
|
|
||
|
|
_This file was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme), v0.5.0, on April 17, 2017._
|