Performance Test - JavaScript

      var tests = 1000;
      var i = 0;
      var t0 = performance.now();
      while (i < tests) {
        functionOne()
        i++;
      }

      var t1 = performance.now();
      console.log("Call to test 1 took " + (t1 - t0) + " milliseconds.");

      var j = 0;
      var t0 = performance.now();

      while (j < tests) {
        functionTwo()
        j++;
      }
      var t1 = performance.now();
      console.log("Call to test 2 took " + (t1 - t0) + " milliseconds.");
      
      function functioOne() {
            return true
      }
      
      function functionTwo() {
            return false
      }