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Return a copy of an object excluding the given key, or array of keys. Also accepts an optional filter function as the last argument.


Install with npm:

$ npm install --save object.omit


var omit = require('object.omit');

Pass a string key to omit:

omit({a: 'a', b: 'b', c: 'c'}, 'a')
//=> { b: 'b', c: 'c' } 

Pass an array of keys to omit:

omit({a: 'a', b: 'b', c: 'c'}, ['a', 'c'])
//=> { b: 'b' } 

Returns the object if no keys are passed:

omit({a: 'a', b: 'b', c: 'c'})
//=> {a: 'a', b: 'b', c: 'c'} 

Returns an empty object if no value is passed.

//=> {} 

Filter function

An optional filter function may be passed as the last argument, with or without keys passed on the arguments:

filter on keys

var res = omit({a: 'a', b: 'b', c: 'c'}, function (val, key) {
  return key === 'a';
//=> {a: 'a'} 

filter on values

var fn = function() {};
var obj = {a: 'a', b: 'b', c: fn};
var res = omit(obj, ['a'], function (val, key) {
  return typeof val !== 'function';
//=> {b: 'b'} 


Related projects

  • object.defaults: Like extend but only copies missing properties/values to the target object. | homepage
  • object.filter: Create a new object filtered to have only properties for which the callback returns true. | homepage
  • object.pick: Returns a filtered copy of an object with only the specified keys, similar to _.pick… [more]( | [homepage]( "Returns a filtered copy of an object with only the specified keys, similar to_.pick` from lodash / underscore.")
  • object.pluck: Like pluck from underscore / lo-dash, but returns an object composed of specified properties, with… more | homepage
  • object.reduce: Reduces an object to a value that is the accumulated result of running each property… more | homepage


Pull requests and stars are always welcome. For bugs and feature requests, please create an issue.

Building docs

(This document was generated by verb-generate-readme (a verb generator), please don't edit the readme directly. Any changes to the readme must be made in

To generate the readme and API documentation with verb:

$ npm install -g verb verb-generate-readme && verb

Running tests

Install dev dependencies:

$ npm install -d && npm test


Jon Schlinkert


Copyright © 2016, Jon Schlinkert. Released under the MIT license.

This file was generated by verb-generate-readme, v0.2.0, on October 27, 2016.