bubbleSort.js

function bubbleSort(arr) {
  for(let i = 0; i < arr.length - 1; i += 1) { // how many times
    let swapped = false;

    for(let j = 0; j < arr.length - 1 - i; j += 1) { // till where
      if(arr[j + 1] < arr[j]) {
        [arr[j + 1], arr[j]] = [arr[j], arr[j + 1]];

        swapped = true;
      }
    }
    
    if(!swapped) {
      break;
    }
  }  
  
  return arr;
}

console.log(bubbleSort([2, 8, 10, 4, 3, 6, 7]));
console.log(bubbleSort([7, 3, 9, 12, 11]));