What is the output of the following? “`js let result = []; for (var i = 0; i < 3; i++) { result.push(() => i); } console.log(result.map(fn => fn())); “`

Question

JavaScript Developer — Hard

What is the output of the following? “`js let result = []; for (var i = 0; i < 3; i++) { result.push(() => i); } console.log(result.map(fn => fn())); “`

Accepted Answer

The output is [3, 3, 3] because the arrow function inside the push method captures the final value of i (which is 3) in each iteration. Therefore, when the map function is called, it returns an array with three 3s.