Question

我正在尝试制作一个数组，将其洗牌，然后按顺序完成。然而，当我不止一次地将它（START）洗牌时，它会变得混乱！当你到达随机数组中的最后一个数字时，它也会混乱！请帮助，谢谢！

JS

var minnum = 1;
var maxnum = 104;

function start() {
  var nums = [];

  while(minnum < maxnum+1){
    nums.push(minnum++);
  }

  function shuffle(o) {
    for(var j, x, i = o.length; i; j = parseInt(Math.random() * i), x = o[--i], o[i] = o[j], o[j] = x);
    return o;
  }

  var randomnum = shuffle(nums);
  document.getElementById('txt').innerHTML = randomnum;
  localStorage["nums"] = JSON.stringify(randomnum);
  localStorage.setItem("current", 0);

}

function Link() {
  if (localStorage.getItem("current") === null || localStorage.getItem("nums") === null) {
    start();
  }

  var current = localStorage.getItem("current");
  var nums = JSON.parse(localStorage["nums"]);
  document.getElementById('txt').innerHTML = nums;
  document.getElementById('txt1').innerHTML = nums[current];
  current++;

  if(current > 103) {
    location.reload();
    start();
    current = 0;
  }
  localStorage.setItem("current", current);
}

HTML

<body>
  <input type="button" onclick="start()" value="Start" />
  <span id="txt"></span>
  <input type="button" onclick="Link()" value="Next" />
  <span id="txt1"></span>
</body>

Answer 1

错误似乎是minnum和maxnum在start()函数之外声明而从未初始化为1和104 ，因此每当您点击开始第二时间，第一个while不会将任何内容推送到 nums 数组，因为minnum为103（来自上一个周期））和maxnum 104。

小提琴：

http://jsfiddle.net/1pd18eun/1/

代码（刚刚移动了minnum和maxnum）：

function start()
{
var minnum = 1;
var maxnum = 104;

var nums = [];
    while(minnum < maxnum+1){
        nums.push(minnum++);
    }
    var randomnum = shuffle(nums);
    document.getElementById('txt').innerHTML = randomnum;
    localStorage["nums"] = JSON.stringify(randomnum);
    localStorage.setItem("current", 0);
}

function shuffle(o) {
    for(var j, x, i = o.length; i; j = parseInt(Math.random() * i), x = o[--i], o[i] = o[j], o[j] = x);
    return o;
}

function Link()
{
    if (localStorage.getItem("current") === null || localStorage.getItem("nums") === null) {
        start();
    }
    var current = localStorage.getItem("current");
    var nums = JSON.parse(localStorage["nums"]);
    document.getElementById('txt').innerHTML = nums;
    document.getElementById('txt1').innerHTML = nums[current];
    current++;
    if(current > 103)
    {
        location.reload();
        start();
        current = 0;
    }
localStorage.setItem("current", current);
}

此外，为了读者和好人，开始缩进代码，很难正确理解你在做什么。

完美的随机化器

1 个答案: