How to calculate when using fraction exponent without using Math.pow? Thanks for answering:) 

<code>
    function power(base, exponent) {
      if (exponent === 0) {
        return 1;
      } else if (base === 1) {
        return base;
      } else if (exponent % 1 == 0 && exponent > 0) {
        return base * power(base, exponent - 1); 
      } else if (exponent % 1 !== 0) {
     
      } else {
        return (1 / base) * (1 / power(1 / base, exponent + 1));
      }
    }

</code>