What is the use Function.prototype.apply method?

The apply invokes a function specifying the this or the "owner" object of that function on that time of invocation.

const details = {
message: 'Hello World!',
function getMessage() {
return this.message;
getMessage.apply(details); // returns 'Hello World!'

This method works like Function.prototype.call the only difference is how we pass arguments. In apply we pass arguments as an array.

const person = {
name: 'Marko Polo',
function greeting(greetingMessage) {
return `${greetingMessage} ${this.name}`;
greeting.apply(person, ['Hello']); // returns "Hello Marko Polo!"

October 16, 2022