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!"
