how to do the fibonacci sequence in javascript code example

Example 1: fibonacci javascript

function Fibonacci(num){
	var before = 0;
	var actual = 1;
	var next = 1;

	for(let i = 0; i < num; i++){
		console.log(next)
		before = actual + next;
		actual = next
		next = before
	}
}

Fibonacci(100);

Example 2: js fibonacci sequence

// number fibonnaci to array format
function fibonacci(nums) {
  
  let fib = [0, 1];
  let data = [];
  
  for(let i = 2; i <= nums; i++) {
    fib[i] = fib[i - 1] + fib[i - 2]; 
    data.push(fib[i]);
  }
  
  return data;
}