The Lodash _.assignIn() Method is like the _.assign() method except that it iterates over its own and inherited source properties. Subsequent source objects overwrite property assignments of previous sources. This method mutates the object.
Syntax:
_.assignIn( dest_object, [src_obj])
Parameters: This method accepts two parameters as mentioned above and described below:
- dest_object: This is the destination object.
- src_obj: These are the source objects.
Return Value: This method returns an object.
Example 1:
Javascript
// Defining Lodash variable const _ = require('lodash');   function Gfg1() {   this.a = 1; }    function Gfg2() {   this.c = 3; }    Gfg1.prototype.b = 10; Gfg2.prototype.d = 40;    console.log(_.assignIn( { a: 4 },     new Gfg1, new Gfg2)); |
Output:
{ a: 1, b: 10, c: 3, d: 40 }
Example 2:
Javascript
// Defining Lodash variable const _ = require('lodash');   function Gfg1() {   this.a = 1; }    function Gfg2() {   this.c = 3; }    console.log(_.assignIn( { a: 4 },     new Gfg1, new Gfg2)); |
Output:
{ a: 1, c: 3 }
