Return a partial object copy containing only specified keys.
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> Return a partial object copy containing only specified keys.
``bash`
npm install @stdlib/utils-pick
`javascript`
var pick = require( '@stdlib/utils-pick' );
#### pick( obj, keys )
Returns a partial copy of an object. The returned object contains only specified keys.
`javascript
var obj1 = {
'a': 1,
'b': 2,
'c': 3
};
var obj2 = pick( obj1, 'b' );
// returns { 'b': 2 }
var obj3 = pick( obj1, [ 'b', 'c' ] );
// returns { 'b': 2, 'c': 3 }
`
If a key does not exist as an own property in a source object, the key is ignored.
`javascript
var obj1 = {
'a': 1,
'b': 2,
'c': 3
};
var obj2 = pick( obj1, 'd' );
// returns {}
`
- The function returns a shallow copy.
- The function only copies own properties. Hence, the function never copies inherited properties.
`javascript
var pick = require( '@stdlib/utils-pick' );
var obj1 = {
'a': 1,
'b': 2,
'c': 3,
'd': 4,
'e': 5
};
var obj2 = pick( obj1, [ 'b', 'c', 'e' ] );
// returns { 'b': 2, 'c': 3, 'e': 5 }
`
*
- [@stdlib/utils-pick-by][@stdlib/utils/pick-by]: return a partial object copy containing properties for which a predicate (function) returns a truthy value.
*
This package is part of [stdlib][stdlib], a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.
For more information on the project, filing bug reports and feature requests, and guidance on how to develop [stdlib][stdlib], see the main project [repository][stdlib].
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---
See [LICENSE][stdlib-license].
Copyright © 2016-2026. The Stdlib [Authors][stdlib-authors].
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[deno-url]: https://github.com/stdlib-js/utils-pick/tree/deno
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[@stdlib/utils/pick-by]: https://www.npmjs.com/package/@stdlib/utils-pick-by