var arr = [  [1, 2, 2],  [3, 4, 6, 7, 8, ],  [6, 5, 5, 9, [11, 12, [12, 13, [14]]]], 10];function machining(arr) {  let newArr = []  let newArr_1 = [];  //扁平化  function toFlat(arr) {    arr.forEach(a => typeof a == 'object' ? toFlat(a) : newArr.push(a));  }  toFlat(arr)  //去重  newArr = newArr.filter((n, i) => newArr.indexOf(n) == i);  //从小到大  newArr.forEach(n => !newArr_1.some((n1, i) => n1 > n && newArr_1.splice(i, 0, n)) && newArr_1.push(n))  //newArr_1 = newArr.sort((a, b) => a - b) 或直接用方法  return newArr_1}console.log(machining(arr))