openpolitics.com

Javascript Object methods every developer should know

let obj = {};
obj.name = “messi”;
obj.year= 2018;
obj.speak = function(){
 return “My Name is “+this.name+” and this is year “+this.year;
}

Deep Copy

If you just need to copy only properties which are not functions — there is an efficient method. We are moving away from Object constructor here and using another global Object in JS — JSON

let deepCopyObj = JSON.parse(JSON.stringify(obj));
console.log(deepCopyObj);

//{ name: 'messi', year: 2019 }

Object.create()

You can also create object with Object.create() function this has additional flexibility that you can choose what will be prototype of your new object.

let createObj = Object.create(obj);
console.log(createObj);  //{}
createObj.name = “Pk”;
console.log(createObj.speak());

// My Name is Pk and this is year 2019