0 votes
in JavaScript by
What's the output?
const person = { name: 'Lydia' };

function sayHi(age) {
  return `${this.name} is ${age}`;
}

console.log(sayHi.call(person, 21));
console.log(sayHi.bind(person, 21));
  • A: undefined is 21 Lydia is 21
  • B: function function
  • C: Lydia is 21 Lydia is 21
  • D: Lydia is 21 function

1 Answer

0 votes
by

Answer: D

With both, we can pass the object to which we want the this keyword to refer to. However, .call is also executed immediately!

.bind. returns a copy of the function, but with a bound context! It is not executed immediately.

...