js实现数组冒泡排序

let arr = [12,3,11,4,5,28,7,6];
for (var i = 0; i < arr.length-1; i++) {
    for (var j = 0; j < arr.length-i-1; j++) {
        if (arr[j] > arr[j+1]){
            let tmp = arr[j];
            arr[j] = arr[j+1];
            arr[j+1] = tmp;
        }
    }
    console.log('newArr', arr);
}