The _.extend() method is like the _.assign() method except that it iterates over its own and inherited source properties.
Syntax:
_.extend(object, sources)
Parameters: This method accepts two parameters as mentioned above and described below:
- object: This parameter holds the destination object.
- sources: This parameter holds the source objects.
Return Value: This method returns an object.
Example 1:
Javascript
// Defining Lodash variable const _ = require('lodash'); function Gfg() { this.a = 5; } function GFG() { this.c = 10; } Gfg.prototype.b = 15; GFG.prototype.d = 20; // Calling _.extend() methjod console.log(_.extend( { a: 4 }, new Gfg, new GFG)); |
Output:
{ a: 5, b: 15, c: 10, d: 20 }
Example 2:
Javascript
// Defining Lodash variable const _ = require('lodash'); function Gfg() { this.a = 5; } function GFG() { this.c = 10; } // Calling _.extend() method console.log(_.extend( { a: 4 }, new Gfg, new GFG)); |
Output:
{ a: 5, c: 10 }
Note: This will not work in normal JavaScript because it requires the lodash library to be installed.
