js数组随机排序

const disorder = function(arr){
  let length = arr.length
  let current = arr.length - 1
  let random
  while(current >= 0){
    // 从0-length之间随机取一个索引
    random = Math.floor(length*Math.random());
    // 与最后一个进行交换
    [arr[current], arr[random]] = [arr[random], arr[current]]
    current--;
  }
  return arr;
}
console.log(disorder([1,2,3,4,5,6,7,8,9,10]))