fizz buzz javascript

for(let i = 1; i <= 100; i++) {
  output = ""
  if(i % 3 == 0) {
    output += "Fizz"
  }
  if(i % 5 == 0) {
    output += "Buzz"
  }
  console.log(output)
}

for (var i=1; i < 101; i++){    if (i % 15 == 0) console.log("FizzBuzz");    else if (i % 3 == 0) console.log("Fizz");    else if (i % 5 == 0) console.log("Buzz");    else console.log(i);}

function fizzBuzz(int) {
    var n = parseInt(int)
    for (var i = 0; i < n; i++) {
        if (i%5 == 0 &&  i%3 == 0) {
            console.log('FizzBuzz')
        } else if (i % 3 == 0 && i % 5 !== 0) {
            console.log('Fizz')
        } else if (i % 5 == 0 && i % 3 !== 0) {
            console.log('Buzz')
        } else if (i % 5 !== 0 && i % 3 !== 0) {
            console.log(i)
        } else {
            console.log(undefined)
        }
    }
}