let myObject = {key : 'Add', array : [0, 2, 3]}
let clonedObject = Object.assign({}, myObject, {array: myObject.array})
clonedObject.array.pop()
console.log(myObject)
console.log(clonedObject)
In the above example, let's say we want to remove an element from the array in clonedObject. Using pop method affects both arrays.
It is crucial to always remember to parse and stringify an object before creating a duplicate,
JSON.parse(JSON.stringify(obj.arr))An object maintains a reference, so if there are changes made to the child or parent object, both will be affected.
For example, if object a = object b, then modifying object b will impact object a as well.
let obj = {key : 'Add',arr : [0,2,3]}
let obj2 = Object.assign({},obj,{arr :JSON.parse(JSON.stringify(obj.arr))})
obj2.arr.pop()
console.log(obj)
console.log(obj2)let obj2 = Object.assign({}, obj, { arr : [...obj.arr] })
Object.assign copies objects superficially, meaning nested objects will be linked by reference.
To create a deep clone, you can convert the object to a string and then back again. However, keep in mind that this method may not work well with objects containing functions or circular references as they will be lost in the process of serialization.
let obj = {name: 'John', hobbies: ['surfing', 'skiing']}
let clonedObj = Object.assign({}, obj, JSON.parse(JSON.stringify({hobbies: obj.hobbies})))
clonedObj.hobbies.push('hiking')
console.log(obj)
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