# Intermediate Algorithm Scripting - Sum All Odd Fibonacci Numbers

Tell us what’s happening:
Hey there guys!! can someone tell me why the code registers an infinite loop? so far the test case of (4000000) is the only one that doesn’t check out, and when I log it out, then the infinite loop comes into play…

``````  **Your code so far**
``````
``````function sumFibs(num) {
for (var fib = [0, 1], i = 1; i < num; i++) {
fib.push(fib[i] + fib[i - 1]);
}
console.log(fib)
return fib.filter(n => n <= num && n % 2 !== 0).reduce((num, sum) => num + sum);
}

console.log(sumFibs(4000000));
``````
``````  **Your browser information:**
``````

User Agent is: `Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/103.0.0.0 Safari/537.36`

Challenge: Intermediate Algorithm Scripting - Sum All Odd Fibonacci Numbers

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I just tested your code and it passes. Remove `console.log(fib)`.

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Console logging is very slow.

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thanks guys!! I’ll keep this in mind when working with such high numbers!

It looks like your for loop logic generates N fibonacci numbers where N=`num`, when you only need to generate fibonacci numbers up to `num` in value. So, you’re generating waaay too many numbers. If you fix that, then you shouldn’t need to check `n <= num` in your filter.

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