Re-write this using a loop

Question

The code below logs all of the even numbers from 2 to 24 to the JavaScript console. However, there's a lot of redundant code here. Re-write this using a loop.

Here is what I came up with...

for (var i = 2; i =< 24; i + 2) {
 console.log(i);
}

I keep getting the error: Bummer! There was an error with your code: SyntaxError: Parse error.

Any ideas what I've done wrong.

Answer 1 · 2016-08-22T23:32:08Z

August 22, 2016 11:32pm

Hey Callum,

Take a look at your conditional. You're saying the loop should run as long as i is equal to or less than 24, which is not how conditional logic works in JavaScript. In short, it's backwards. You should first check if i is less than 24 and then if it's equal to 24. You'll also want to watch how you add to your i variable. i + 2 is not the same as i += 2, which is what you want in this case.

for (var i = 2; i <= 24; i += 2) {
 console.log(i);
}

Answer 2 · 2016-08-23T00:34:32Z

August 23, 2016 12:34am

Your post logic action needs the equals (=) symbol to indicate you are adding 2 to i each time the loop runs - otherwise your loop can't progress.

for (var i = 2; i <= 24; i += 2){
console.log(i);
}

:)

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Callum McDonald

Callum McDonald

Re-write this using a loop

2 Answers

jacobproffer

jacobproffer

Marshall Wells

Marshall Wells