how to generate a fibonacci sequence in javascript

1// declare the array starting with the first 2 values of the fibonacci sequence
2    let fibonacci = [0,1];
3    
4    function listFibonacci(num) {
5    // starting at array index 1, and push current index + previous index to the array
6        for (let i = 1; i < num; i++) {
7            fibonacci.push(fibonacci[i] + fibonacci[i - 1]);
8        }
9        console.log(fibonacci);
10    }
11    
12    listFibonacci(10);
13    

1// number fibonnaci to array format
2function fibonacci(nums) {
3  
4  let fib = [0, 1];
5  let data = [];
6  
7  for(let i = 2; i <= nums; i++) {
8    fib[i] = fib[i - 1] + fib[i - 2]; 
9    data.push(fib[i]);
10  }
11  
12  return data;
13}

1var i;
2    var fib = []; // Initialize array!
3
4    fib[0] = 0;
5    fib[1] = 1;
6    for (i = 2; i <= 10; i++) {
7      // Next fibonacci number = previous + one before previous
8      // Translated to JavaScript:
9      fib[i] = fib[i - 2] + fib[i - 1];
10      console.log(fib[i]);
11    }