<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
  <title></title>
  <script src="Scripts/jquery-1.10.2.js"></script>
  <script type="text/javascript">
    var numArray = new Array();
    var personNum = 30;
    $(function () {
      for (var i = 0; i < personNum; i++) {
        numArray[i] = i;
      }
      $("li").click(function () {
        var n = Math.floor(Math.random() * numArray.length + 1) - 1; //生成隨機(jī)數(shù)
        $(this).text(numArray[n]);
        numArray.splice(n, 1); //移除隨機(jī)數(shù)
      });
      $("#btnStart").click(function () {
        var totalArray = new Array();
        $("li").each(function (i, v) {
          totalArray[i] = v.innerText;
        });
        var n = Math.floor(Math.random() * totalArray.length + 1) - 1; //生成隨機(jī)數(shù)
        this.value = totalArray[n];
        $("li").each(function (i, v) {
          if (v.innerText == $("#btnStart").val()) {
            this.style.background = "red";
          }
          else
          {
            this.style.background = "white";
          }
        });
      });
    });
  </script>
  <style type="text/css">
    ul {
      /*display: block;
      float:left;*/
    }
      ul li {
        width: 150px;
        height: 150px;
        line-height: 150px;
        border: 1px solid gray;
        float: left;
        margin-left: 10px;
        margin-top: 10px;
        list-style-type: none;
        text-align: center;
        font-size: 20px;
      }
    #btnStart {
      width: 100px;
      height: 30px;
      margin-left: 10px;
      margin-top: 10px;
    }
  </style>
</head>
<body>
  <div>
    <ul>
      <li>click me!</li>
      <li>click me!</li>
      <li>click me!</li>
      <li>click me!</li>
    </ul>
    <ul>
      <li>click me!</li>
      <li>click me!</li>
      <li>click me!</li>
      <li>click me!</li>
    </ul>
    <ul>
      <li>click me!</li>
      <li>click me!</li>
      <li>click me!</li>
      <li>click me!</li>
    </ul>
    <ul>
      <li>click me!</li>
      <li>click me!</li>
      <li>click me!</li>
      <li>click me!</li>
    </ul>
    <ul>
      <li>click me!</li>
      <li>click me!</li>
      <li>click me!</li>
      <li>click me!</li>
    </ul>
  </div>
  <input id="btnStart" type="button" value="Start" />
</body>
</html>

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