Sum up all odd Fibbonaci numbers - solution 1

algo_mid_two_1.js

// All odd Fibbonaci's
function sumOddFibsBasic(number) {
  // 1. Create variables storing two latest values from the Fibbonaci numbers
  // and value of a final sum off only odd numbers
  let previousNum = 0;
  let currentNum = 1;
  let result = 0;

  // 2. While loop iterates as long as current value is smaller that function parameter
  while (currentNum <= number) {
    // 3. If Fibbonaci number is odd, add it to the sum
    if (currentNum % 2 !== 0) {
      result += currentNum;
    }

    // 4. Update two latest values from Fibbonaci sequence
    currentNum += previousNum;
    previousNum = currentNum - previousNum;
  }
  return result;
}

console.time('Start Algo 1');
console.log(sumOddFibsBasic(467));
console.timeEnd('Start Algo 1'); // Start Algo 1: 0.460693359375ms