JS 随机数字抽签

<!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;  //生成随机数

                $(this).text(numArray[n]);

                numArray.splice(n, 1);  //移除随机数

            });

            $("#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;  //生成随机数

                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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JS 随机数字抽签

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