javascript - 生成 3 个非重复值

Question

我必须每 2 秒生成 3 个 0-9 的随机数，它可以工作，但是在某些情况下我会得到重复的值，例如 4 7 7 。如果有人能指出我的错误，那就太好了，谢谢

if (firstNum == secondNum || firstNum == thirdNum) {
  firstNum = Math.floor((Math.random() * 9) + 1);
} else if (secondNum == firstNum || secondNum == thirdNum) {
  secondNum = Math.floor((Math.random() * 9) + 1);
} else if (thirdNum == firstNum || thirdNum == secondNum) {
  thirdNum = Math.floor((Math.random() * 9) + 1);
}

Answer 1

保持简单

setInterval(function(){
  let first_number  = parseInt(Math.random()*10),
    second_number = null,
    third_number  = null;

  while (second_number == third_number || first_number == second_number || third_number == second_number){
    second_number = parseInt(Math.random()*10);
    third_number = parseInt(Math.random()*10);
  }

  console.log(first_number, second_number, third_number)
},2000)