| # unset-value [](https://www.npmjs.com/package/unset-value) [](https://npmjs.org/package/unset-value) [](https://npmjs.org/package/unset-value) [](https://travis-ci.org/jonschlinkert/unset-value) |
| |
| > Delete nested properties from an object using dot notation. |
| |
| ## Install |
| |
| Install with [npm](https://www.npmjs.com/): |
| |
| ```sh |
| $ npm install --save unset-value |
| ``` |
| |
| ## Usage |
| |
| ```js |
| var unset = require('unset-value'); |
| |
| var obj = {a: {b: {c: 'd', e: 'f'}}}; |
| unset(obj, 'a.b.c'); |
| console.log(obj); |
| //=> {a: {b: {e: 'f'}}}; |
| ``` |
| |
| ## Examples |
| |
| ### Updates the object when a property is deleted |
| |
| ```js |
| var obj = {a: 'b'}; |
| unset(obj, 'a'); |
| console.log(obj); |
| //=> {} |
| ``` |
| |
| ### Returns true when a property is deleted |
| |
| ```js |
| unset({a: 'b'}, 'a') // true |
| ``` |
| |
| ### Returns `true` when a property does not exist |
| |
| This is consistent with `delete` behavior in that it does not |
| throw when a property does not exist. |
| |
| ```js |
| unset({a: {b: {c: 'd'}}}, 'd') // true |
| ``` |
| |
| ### delete nested values |
| |
| ```js |
| var one = {a: {b: {c: 'd'}}}; |
| unset(one, 'a.b'); |
| console.log(one); |
| //=> {a: {}} |
| |
| var two = {a: {b: {c: 'd'}}}; |
| unset(two, 'a.b.c'); |
| console.log(two); |
| //=> {a: {b: {}}} |
| |
| var three = {a: {b: {c: 'd', e: 'f'}}}; |
| unset(three, 'a.b.c'); |
| console.log(three); |
| //=> {a: {b: {e: 'f'}}} |
| ``` |
| |
| ### throws on invalid args |
| |
| ```js |
| unset(); |
| // 'expected an object.' |
| ``` |
| |
| ## About |
| |
| ### Related projects |
| |
| * [get-value](https://www.npmjs.com/package/get-value): Use property paths (`a.b.c`) to get a nested value from an object. | [homepage](https://github.com/jonschlinkert/get-value "Use property paths (`a.b.c`) to get a nested value from an object.") |
| * [get-values](https://www.npmjs.com/package/get-values): Return an array of all values from the given object. | [homepage](https://github.com/jonschlinkert/get-values "Return an array of all values from the given object.") |
| * [omit-value](https://www.npmjs.com/package/omit-value): Omit properties from an object or deeply nested property of an object using object path… [more](https://github.com/jonschlinkert/omit-value) | [homepage](https://github.com/jonschlinkert/omit-value "Omit properties from an object or deeply nested property of an object using object path notation.") |
| * [put-value](https://www.npmjs.com/package/put-value): Update only existing values from an object, works with dot notation paths like `a.b.c` and… [more](https://github.com/tunnckocore/put-value#readme) | [homepage](https://github.com/tunnckocore/put-value#readme "Update only existing values from an object, works with dot notation paths like `a.b.c` and support deep nesting.") |
| * [set-value](https://www.npmjs.com/package/set-value): Create nested values and any intermediaries using dot notation (`'a.b.c'`) paths. | [homepage](https://github.com/jonschlinkert/set-value "Create nested values and any intermediaries using dot notation (`'a.b.c'`) paths.") |
| * [union-value](https://www.npmjs.com/package/union-value): Set an array of unique values as the property of an object. Supports setting deeply… [more](https://github.com/jonschlinkert/union-value) | [homepage](https://github.com/jonschlinkert/union-value "Set an array of unique values as the property of an object. Supports setting deeply nested properties using using object-paths/dot notation.") |
| * [upsert-value](https://www.npmjs.com/package/upsert-value): Update or set nested values and any intermediaries with dot notation (`'a.b.c'`) paths. | [homepage](https://github.com/doowb/upsert-value "Update or set nested values and any intermediaries with dot notation (`'a.b.c'`) paths.") |
| |
| ### Contributing |
| |
| Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new). |
| |
| ### Contributors |
| |
| | **Commits** | **Contributor** | |
| | --- | --- | |
| | 6 | [jonschlinkert](https://github.com/jonschlinkert) | |
| | 2 | [wtgtybhertgeghgtwtg](https://github.com/wtgtybhertgeghgtwtg) | |
| |
| ### 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), v0.4.2, on February 25, 2017._ |