Not passing one of the tests: Sum of Fibonacci numbers

Interestingly, all test cases are passing except the third one. I tried the code in hint section but the advanced solution, too, doesn’t pass a couple tests.

Can anyone please tell me where is the bug?

Your code so far

function sumFibs(num) {
  function fib (n){
    if (n===1||n===2){return 1;}
    return fib(n-1)+fib(n-2);
 var sum=0;
  for(let i=1;fib(i)<=num;i++){
  return sum;


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Link to the challenge:

You’re doing enormous amounts of calculations and they’re all recursive. I haven’t tested the code, but this will definitely trip the timeout on the tests for very large inputs. Ideally find a solution that does not use recursion.

I see. Thanks, Dan. I’ll write a for loop.