selectionSort.js

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

    for(let j = i + 1; j < arr.length; j += 1) { // starts from where
      if(arr[j] < arr[min_index]) {
        min_index = j;
      }
    }

    [arr[min_index], arr[i]] = [arr[i], arr[min_index]];
  }  
  
  return arr;
}

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