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Copy enumerable own properties from one or more source objects to a target object.

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About stdlib...

We believe in a future in which the web is a preferred environment for numerical computation. To help realize this future, we've built stdlib. stdlib is a standard library, with an emphasis on numerical and scientific computation, written in JavaScript (and C) for execution in browsers and in Node.js.

The library is fully decomposable, being architected in such a way that you can swap out and mix and match APIs and functionality to cater to your exact preferences and use cases.

When you use stdlib, you can be absolutely certain that you are using the most thorough, rigorous, well-written, studied, documented, tested, measured, and high-quality code out there.

To join us in bringing numerical computing to the web, get started by checking us out on GitHub, and please consider financially supporting stdlib. We greatly appreciate your continued support!

assign

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Copy enumerable own properties from one or more source objects to a target object.

Usage

import assign from 'https://cdn.jsdelivr.net/gh/stdlib-js/object-assign@deno/mod.js';

assign( target, source1[, source2[,...,sourceN]] )

Copies enumerable own properties from one or more source objects to a target object.

var x = {
    'a': 'beep'
};
var y = {
    'b': 'boop'
};

var z = assign( x, y );

var v = z.b;
// returns 'boop'

var bool = ( z === x );
// returns true

Notes

  • If a property key is present in multiple sources, the property from the last source that defines the key prevails.
  • The target object is mutated.

Examples

import assign from 'https://cdn.jsdelivr.net/gh/stdlib-js/object-assign@deno/mod.js';

var obj1 = {
    'name': 'Jane',
    'age': 29
};
var obj2 = {
    'country': 'US',
    'city': 'San Francisco'
};
var obj3 = {
    'hobby': 'Reading'
};

var result = assign( obj1, obj2, obj3 );
// returns { 'name': 'Jane', 'age': 29, 'country': 'US', 'city': 'San Francisco', 'hobby': 'Reading' }

Notice

This package is part of stdlib, a standard library 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, see the main project repository.

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License

See LICENSE.

Copyright

Copyright © 2016-2025. The Stdlib Authors.

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