I don't understand this challenge, can someone please explain?

JavaScript
1

Tell us what’s happening:
Describe your issue in detail here.

var printNumTwo;
for (var i = 0; i < 3; i++) {
  if (i === 2) {
    printNumTwo = function() {
      return i;
    };
  }
}
console.log(printNumTwo());

How does console display the value 2? I’m confused

2

I meant how does it console display the value 3*

3

@Rnwego The printNumTwo variable is declared as function that return value of i when i is equals to two. But the the loop is still going after the function is declared. Which mean, i become 3 so that the function return 3 instead of 2.

1 Like
4

I’m sorry I’m still a little confused. Why is the loop still going when the condition is for i < 3

5

In the beginning i=0. Is it less than 3? i<3? Yes then we enter the loop.

Inside the loop is i=2? No! So we skip what’s inside the bracket.

Next thing is i is incremented by 1 because of i++. Now i is 2. So we check is i<3. Yes! We enter inside the for loop’s brackets again.

Then we do the check again is i==2? Yes because i is indeed 2 now. Thus we return i which is what gets printed.

1 Like
6

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