About Lesson
//**** Deep copy using Stringify ****//
// Issue using Stringify for Deep Copy It is not supporting following
// function, Infinity, NaN, circular references
// Map, Set, Date, RegExp
// const obj = {“name”:”sanjay”} -> Json
const original = {a:1,b:{c:2}};
function deepcopy(obj){
return JSON.parse(JSON.stringify(obj));
}
const copy = deepcopy(original);
//**** Deep copy using lodash function ****//
const _ = require(‘lodash’);
const original = {a:1,b:{c:2}};
const copy = _.cloneDeep(original);
const original = {a:1,b:{c:2}};
const copy = structuredClone(original);
console.log(copy)
// Custom Polyfill for Deep Copy
if(!Object.deepCopy){
Object.deepCopy = function(val){
if(val === null || typeof val !== “object”){
return val;
}
if(Array.isArray(val)){
return val.map(item => Object.deepCopy(item));
}
return Object.keys(val).reduce((acc,key)=>{
acc[key] = Object.deepCopy(val[key]);
return acc;
}, {})
}
}
const original = {a:1,b:{c:2}};
const copy = Object.deepCopy(original);
console.log(“original”, original);
copy.b = “Sanjay”;
console.log(“copy”, copy);
