knowledge/javascript/others/javascript.algorithms/array/index.html at master · TingGe/knowledge · GitHub

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<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <title>随机打乱一个一维数组</title>
</head>

<body>
  <script type="text/javascript">
    // 方法一
    var arr = [];
    for (var i = 0; i < 10; i++) {
      arr[i] = i;
    }

    arr.sort(function() {
      return 0.5 - Math.random()
    })
    var str = arr.join();
    document.write(str + "<br>");

    //方法二
    function shuffle(arr) {
      var len = arr.length;
      for (var i = 0; i < len; i++) {
        var j = Math.floor(Math.random() * len);
        var temp = arr[i];
        arr[i] = arr[j];
        arr[j] = temp;
      }
    }
    shuffle(arr);
    str = arr.join();
    document.write(str + "<br>");
  </script>
</body>

</html>