Do you know what will be the output of this code? for (var i = 0; i < 3; i++) {} console.log(i);

Is a var loop variable accessible after a for loop?

Do you know what will be the output of this code?

JavaScript

for (var i = 0; i < 3; i++) {}
console.log(i);

Show answer and explanation

The answer is 3.

var is scoped to the function (or the global scope), not the loop block. The loop stops when i < 3 is false, which is when i is 3.

With let i, the variable would only exist inside the loop and this would throw a ReferenceError.