Cloning an Object with Lodash - onlinecode

Cloning an Object with Lodash – onlinecode

Cloning an Object with Lodash – onlinecode

In this post, we will give you information about Cloning an Object with Lodash – onlinecode. Here we will give you detail about Cloning an Object with Lodash – onlinecode And how to use it also give you a demo for it if it is necessary.

Lodash’s clone() function is a powerful utility for shallow cloning generic objects. The Object.assign() function or the spread operator are the canonical methods for shallow copying a POJO. But _.clone() has some additional functionality built in that may make it a better choice for your use case.

Cloning an Array

Object.assign() and _.clone() behave similarly when
copying a plain old JavaScript object (POJO). But what
about cloning an array?

const arr = ['a', 'b', 'c'];

// 'Object.assign()' will copy all the array properties
// into a POJO
Object.assign({}, arr); // { '0': 1, '1': 2, '2': 3 }

// But '_.clone()' is smart enough to clone an array
_.clone(arr); // ['a', 'b', 'c']

Cloning an Instance of a Class

Another benefit of _.clone() is that the cloned object
will have the same ES6 class as the original object. The Object.assign() function always returns a POJO.

class MyClass {
  constructor(val) {
    this.val = val;

const obj = new MyClass(42);

// 'Object.assign()' **always** returns a POJO. It
// doesn't actually create a new instance of the class.
Object.assign({}, obj) instanceof MyClass; // false

// '_.clone()' retains the original object's class.
_.clone(obj) instanceof MyClass; // true


If you need to clone a POJO, you don’t need Lodash. Just use {...obj} or Object.assign({}, obj). But _.clone() isĀ  handy if you find yourself needing to clone class instances, or just want to be able to clone an arbitrary object without checking whether it is an array.

Lodash is a JavaScript library which provides utility functions for common programming tasks using the functional programming paradigm. Lodash is a JavaScript library that helps programmers write more concise and maintainable JavaScript. It can be broken down into several main areas: Utilities: for simplifying common programming tasks such as determining type as well as simplifying math operations.

Why Lodash?

Lodash makes JavaScript easier by taking the hassle out of working with arrays, numbers, objects, strings, etc.Lodash’s modular methods are great for:

  • Iterating arrays, objects, & strings
  • Manipulating & testing values
  • Creating composite functions

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