How to get the index of the function in an array of functions which executed the fastest in JavaScript ?

<script>
    // 1st function
    function hello() {
      var s = "";
      var ans = ["The", " hello function ", "takes "];
      for (var i = 0; i < 3; i++) s += ans[i];
      console.log(s);
    }
    
    // 2nd function
    function hello1() {
      var s = "";
      var ans = ["The hello1 function", " takes "];
      for (var i = 0; i < 2; i++) s += ans[i];
      console.log(s);
    }
    
    // 3rd function
    function hello2() {
      var ans = "The hello2 function takes ";
      for (var i = 0; i < 1; i++) console.log(ans);
    }
    
    // Function to check time required by each function
    function findTime(f) {
    
      // Storing initial time in start
      var start = performance.now();
    
      // Calling the function
      f();
    
      // Storing time after running the function
      var end = performance.now();
    
      // Return time taken by function
      return end - start;
    }
    
    function findMinTime() {
    
      // Initializing array of functions
      var fun = [hello, hello1, hello2];
    
      // Initialising array of time taken by function
      var ans = [];
    
      // Iterating over all the functions and
      // storing time taken by them
      for (var i = 0; i < 3; i++) {
        var n = findTime(fun[i]);
        ans[i] = n;
        console.log(ans[i]);
      }
    
      // Finding the minimum time in array
      var answer = Math.min.apply(null, ans);
      c = ans.indexOf(answer);
    
      // Return index of fastest array
      return c;
    }
    
    var minTime = findMinTime();
    console.log("Index of fastest function:", minTime);
</script>

<script>
    // 1st function
    function fac(n) {
        let fact = 1;
        for (let i = 1; i <= 4; i++)
        fact *= i;
        console.log("Factorial of 4 is:", fact);
    }
    
    // 2nd function
    function fibo() {
        let fab = 0;
        let j = 1;
        for (let i = 2; i <= 6; i++) {
        let temp = fab;
        fab += j;
        j = temp;
        }
        console.log("6th fibonacci no is:", fab);
    }
    
    // 3rd function
    function binpow() {
        let j = 2;
        let k = 22;
        for (let i = 0; i < k; i++)
        j = ((j * j) % 1e9) + 7;
        console.log(
        "Power 2 to 22 mod 1e9+7 is:", j
        );
    }
    
    // Function to check time required
    // by each function
    function findTime(f) {
    
        // Storing initial time in start
        var start = performance.now();
    
        // Calling the function
        f();
    
        // Storing time after running the function
        var end = performance.now();
    
        // Return time taken by function
        return end - start;
    }
    
    function findMinTime() {
    
        // Initializing array of functions
        var fun = [fac, fibo, binpow];
    
        // Initialising array of time
        // taken by function
        var ans = [];
    
        // Iterating over all the functions
        // and storing time taken by them
        for (var i = 0; i < 3; i++) {
        var n = findTime(fun[i]);
        ans[i] = n;
        console.log(ans[i]);
        }
    
        // Finding the minimum time in array
        var answer = Math.min.apply(null, ans);
        c = ans.indexOf(answer);
    
        // Return index of fastest array
        return c;
    }
    
    var minTime = findMinTime();
    console.log("Index of fastest function:",
                minTime);
</script>