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  1. # object.omit [![NPM version](https://img.shields.io/npm/v/object.omit.svg?style=flat)](https://www.npmjs.com/package/object.omit) [![NPM monthly downloads](https://img.shields.io/npm/dm/object.omit.svg?style=flat)](https://npmjs.org/package/object.omit) [![NPM total downloads](https://img.shields.io/npm/dt/object.omit.svg?style=flat)](https://npmjs.org/package/object.omit) [![Linux Build Status](https://img.shields.io/travis/jonschlinkert/object.omit.svg?style=flat&label=Travis)](https://travis-ci.org/jonschlinkert/object.omit)
  2. > Return a copy of an object excluding the given key, or array of keys. Also accepts an optional filter function as the last argument.
  3. Follow this project's author, [Jon Schlinkert](https://github.com/jonschlinkert), for updates on this project and others.
  4. ## Install
  5. Install with [npm](https://www.npmjs.com/):
  6. ```sh
  7. $ npm install --save object.omit
  8. ```
  9. ## Usage
  10. ```js
  11. var omit = require('object.omit');
  12. ```
  13. Pass a string `key` to omit:
  14. ```js
  15. omit({a: 'a', b: 'b', c: 'c'}, 'a')
  16. //=> { b: 'b', c: 'c' }
  17. ```
  18. Pass an array of `keys` to omit:
  19. ```js
  20. omit({a: 'a', b: 'b', c: 'c'}, ['a', 'c'])
  21. //=> { b: 'b' }
  22. ```
  23. Returns the object if no keys are passed:
  24. ```js
  25. omit({a: 'a', b: 'b', c: 'c'})
  26. //=> {a: 'a', b: 'b', c: 'c'}
  27. ```
  28. Returns an empty object if no value is passed.
  29. ```js
  30. omit()
  31. //=> {}
  32. ```
  33. ### Filter function
  34. An optional filter function may be passed as the last argument, with or without keys passed on the arguments:
  35. **filter on keys**
  36. ```js
  37. var res = omit({a: 'a', b: 'b', c: 'c'}, function (val, key) {
  38. return key === 'a';
  39. });
  40. //=> {a: 'a'}
  41. ```
  42. **filter on values**
  43. ```js
  44. var fn = function() {};
  45. var obj = {a: 'a', b: 'b', c: fn};
  46. var res = omit(obj, ['a'], function (val, key) {
  47. return typeof val !== 'function';
  48. });
  49. //=> {b: 'b'}
  50. ```
  51. ## About
  52. ### Related projects
  53. You might also be interested in these projects:
  54. * [object.defaults](https://www.npmjs.com/package/object.defaults): Like `extend` but only copies missing properties/values to the target object. | [homepage](https://github.com/jonschlinkert/object.defaults "Like `extend` but only copies missing properties/values to the target object.")
  55. * [object.filter](https://www.npmjs.com/package/object.filter): Create a new object filtered to have only properties for which the callback returns true. | [homepage](https://github.com/jonschlinkert/object.filter "Create a new object filtered to have only properties for which the callback returns true.")
  56. * [object.pick](https://www.npmjs.com/package/object.pick): Returns a filtered copy of an object with only the specified keys, similar to `_.pick… [more](https://github.com/jonschlinkert/object.pick) | [homepage](https://github.com/jonschlinkert/object.pick "Returns a filtered copy of an object with only the specified keys, similar to`_.pick` from lodash / underscore.")
  57. * [object.pluck](https://www.npmjs.com/package/object.pluck): Like pluck from underscore / lo-dash, but returns an object composed of specified properties, with… [more](https://github.com/jonschlinkert/object.pluck) | [homepage](https://github.com/jonschlinkert/object.pluck "Like pluck from underscore / lo-dash, but returns an object composed of specified properties, with values unmodified from those of the original object.")
  58. * [object.reduce](https://www.npmjs.com/package/object.reduce): Reduces an object to a value that is the accumulated result of running each property… [more](https://github.com/jonschlinkert/object.reduce) | [homepage](https://github.com/jonschlinkert/object.reduce "Reduces an object to a value that is the accumulated result of running each property in the object through a callback.")
  59. ### Contributing
  60. Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new).
  61. ### Contributors
  62. | **Commits** | **Contributor** |
  63. | --- | --- |
  64. | 21 | [jonschlinkert](https://github.com/jonschlinkert) |
  65. | 1 | [bfred-it](https://github.com/bfred-it) |
  66. ### Building docs
  67. _(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.)_
  68. To generate the readme, run the following command:
  69. ```sh
  70. $ npm install -g verbose/verb#dev verb-generate-readme && verb
  71. ```
  72. ### Running tests
  73. 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:
  74. ```sh
  75. $ npm install && npm test
  76. ```
  77. ### Author
  78. **Jon Schlinkert**
  79. * [github/jonschlinkert](https://github.com/jonschlinkert)
  80. * [twitter/jonschlinkert](https://twitter.com/jonschlinkert)
  81. ### License
  82. Copyright © 2017, [Jon Schlinkert](https://github.com/jonschlinkert).
  83. Released under the [MIT License](LICENSE).
  84. ***
  85. _This file was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme), v0.6.0, on September 03, 2017._