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# 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._