SOURCE

let arrX = new Array(10), i = 0

// 获取区间随机数
function getRandom(min = 0, max = 10) {
  return Math.floor(Math.random() * (max - min + 1) + min);
}

(function setArr(num) {
  if (arrX.indexOf(num) < 0) {
    arrX[i] = num
    i++
  }
  if (i < arrX.length) {
    setArr(getRandom())
    
  }
})(getRandom())

console.log(arrX)