JavaScript Object assign() Method

by Online Tutorials Library July 22, 2022

JavaScript Object.assign() Method

The Object.assign() method is used to copy the values of all enumerable own properties from one or more source objects to a target object. Objects are assigned and copied by reference. It will return the target object.

Syntax:

Parameter

target: The target object.

sources: The source object(s).

Return value:

This method returns the target object.

Browser Support:

Chrome	Yes
Edge	Yes
Firefox	Yes
Opera	No

Example 1

  const object1 = {    a: 1,    b: 2,    c: 3  };  const object3= {    g: 1,    h: 2,    i: 3  };    const object2 = Object.assign({c: 4, d: 5}, object1);  const object4 = Object.assign({g: 34, h: 25}, object3);  console.log(object2.c, object2.d);  console.log(object4.g, object4.h);  

Output:

3   5  1   2

Example 2

  const object1 = {    a: 11,    b: 12,    c: 33  };    const object2 = Object.assign({c: 4, d: 5}, object1);  console.log(object2.c, object2.d);  

Output:

33   5

Example 3

  const object1 = {    a: 1,    b: 2,    c: 3  };    const object2 = Object.assign({a: 3,c: 4, d: 5,g: 23,}, object1);    console.log(object2.c, object2.d,object2.g,object2.a);  

Output:

3   5   23   1

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JavaScript Object assign() Method

JavaScript Object.assign() Method

Syntax:

Parameter

Return value:

Browser Support:

Example 1

Example 2

Example 3

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