Javascript Fibonacci Sequence

gistfile1.txt

function generateFibonacci(length){
	let sequence = [1];
 	for(var i = 1; i <= length; i++){
  
  	if (sequence.length === 1) {
    	sequence[i] = 1
    }
 
    else{
    	sequence[i] = sequence[i-1] + sequence[i - 2]
    }
  }
  
  return sequence
}