Breaking News: Grepper is joining You.com. Read the official announcement!

shallow copy vs deep copy js

Add Answer

our Supreme Lord and Savior answered on August 22, 2020 Popularity 10/10 Helpfulness 2/10

answer shallow copy vs deep copy js

related how to copy object in javascript shallow copy deep copy

related shallow copy vs deep copy

shallow copy vs deep copy js

Comment

/*

Search Results
Featured snippet from the web
A deep copy means that all of the values of the new variable
are copied and disconnected from the original variable. 
A shallow copy means that certain (sub-)values are still connected
to the original variable. To really understand copying,
you have to get into how JavaScript stores values


/*

Popularity 10/10 Helpfulness 2/10 Language javascript

Source: www.freecodecamp.org

Tags: deep-copy javascript shallow-copy

Link to this answer
Share Copy Link

Contributed on Aug 22 2020

our Supreme Lord and Savior

0 Answers Avg Quality 2/10

Closely Related Answers

how to copy object in javascript shallow copy deep copy

Comment

const obj = {a: 25, b: {x: 5, y: 10}, c: 75};

const copySpread = {...obj};
const copyAssign = Object.assign({}, obj);
const copyDeep = JSON.parse(JSON.stringify(obj));

// Modifying the nested object in the copied objects
copySpread.b.x = 99;
copyAssign.b.x = 100;
copyDeep.b.x = 101;

console.log(obj.b.x);       // Output: 101 (original object is modified)
console.log(copySpread.b.x); // Output: 99 (shallow copy, nested object is shared)
console.log(copyAssign.b.x); // Output: 100 (shallow copy, nested object is shared)
console.log(copyDeep.b.x);   // Output: 101 (deep copy, nested object is copied)

Popularity 10/10 Helpfulness 3/10 Language javascript

Source: chat.openai.com

Tags: copy

Link to this answer
Share Copy Link

Contributed on Aug 04 2023

somashekhar B

0 Answers Avg Quality 2/10

shallow copy vs deep copy

Comment

FOR JAVASCRIPT:

	- Shallow Copy: 
        object2 = object1  

    - Deep Copy:
        object2 = {...object1}       //for arrays: array2 = [...array1]

    - Deep Copy (for Objects with nested Objects):
        object2 = JSON.parse(JSON.stringify(object1));

    - Deep Copy (for objects with nested 'Date object' OR functions):
        1- npm i loadash
        2- const _ = require('loadash');
        3- object2 = _.cloneDeep(object1);

Popularity 10/10 Helpfulness 3/10 Language whatever

Source: Grepper

Tags: deep-copy deep

Link to this answer
Share Copy Link

Contributed on May 28 2022

Excited Elk

0 Answers Avg Quality 2/10

shallow copy vs deep copy

Comment

-1

from copy import copy, deepcopy

# Class of Car
class Car:
    def __init__(self, name, colors):
        self.name = name
        self.colors = colors
        
honda = Car("Honda", ["Red", "Blue"])
# Deepcopy of Honda
deepcopy_honda = deepcopy(honda)
deepcopy_honda.colors.append("Green")
print(deepcopy_honda.colors,honda.colors)
print(id(deepcopy_honda),id(honda))              #different address for main class
print(id(deepcopy_honda.colors),id(honda.colors))#different storage for attributes of the shallow copied class

# Shallow Copy of Honda
copy_honda = copy(honda)
copy_honda.colors.append("Green")
print(copy_honda.colors,honda.colors)
print(id(copy_honda),id(honda))                  #different address for main class
print(id(copy_honda.colors),id(honda.colors))    #same storage for attributes of the shallow copied class

#OUTPUTS
['Red', 'Blue', 'Green'] ['Red', 'Blue']
1909026397440 1909026397344
1908994536832 1908995605376
['Red', 'Blue', 'Green'] ['Red', 'Blue', 'Green']
1909026471312 1909026397344
1908995605376 1908995605376

Popularity 10/10 Helpfulness 1/10 Language whatever

Source: Grepper

Tags: deep-copy deep

Link to this answer
Share Copy Link

Contributed on Jul 14 2022

Enthusiastic Echidna

0 Answers Avg Quality 2/10

shallow copy vs deep copy js

Contents

More Related Answers

shallow copy vs deep copy js

Closely Related Answers

how to copy object in javascript shallow copy deep copy

shallow copy vs deep copy

shallow copy vs deep copy

Grepper

Documentation

Social

Legal

Contact

Oops, You will need to install Grepper and log-in to perform this action.