Sum All Odd Fibonacci Numbers

sumFibs.js

function sumFibs(num) {
  var init = 0;
  var fib = [0,1];
  var fibSum = 0;
  var nextFib = 0;
  var getFib = 0;
  var i = 2;

  while (nextFib <= num){
    getFib = fib[i-2]+fib[i-1];
    if (getFib <= num){
      fib.push(getFib);
    }
    nextFib = fib[i-1]+fib[i];
    i++;
  }
  
  for (var j=0;j<fib.length;j++){
    if (isEven(fib[j]) === false){
      fibSum = fibSum+fib[j];
    }
  }
  
  function isEven(n){
    n = Math.abs(n%2);
    if (n == 1){
      return false;
    }else{
      return true;
    }
    return false;
  }
  
  return fibSum;
}
sumFibs(75025);

SumFibs.markdown

Sum All Odd Fibonacci Numbers

Returns the sum of all odd Fibonacci numbers up to and including the passed number if it is a Fibonacci number. The first few numbers of the Fibonacci sequence are 1, 1, 2, 3, 5 and 8, and each subsequent number is the sum of the previous two numbers. As an example, passing 4 to the function should return 5 because all the odd Fibonacci numbers under 4 are 1, 1, and 3.

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