jquery获取选中的radio的值

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<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <title></title>
    <script src="Scripts/jquery-1.4.1-vsdoc.js" type="text/javascript"></script>
    <script type="text/javascript">
        $(function () {
            $("#test").click(function () {
                alert($("#rblAnalysis input:radio:checked").val());
            });
        });
    </script>
</head>
<body>
    <table id="rblAnalysis">
        <tr>
            <td>
                <input id="rblAnalysis_0" type="radio" name="ctl00$ContentPlaceHolder1$rblAnalysis"
                    value="1" checked="checked" /><label for="rblAnalysis_0">油品小类维度</label>
            </td>
            <td>
                <input id="rblAnalysis_1" type="radio" name="ctl00$ContentPlaceHolder1$rblAnalysis"
                    value="2" /><label for="rblAnalysis_1">油品大类维度</label>
            </td>
            <td>
                <input id="rblAnalysis_2" type="radio" name="ctl00$ContentPlaceHolder1$rblAnalysis"
                    value="3" /><label for="rblAnalysis_2">企业类型维度</label>
            </td>
            <td>
                <input id="rblAnalysis_3" type="radio" name="ctl00$ContentPlaceHolder1$rblAnalysis"
                    value="4" /><label for="rblAnalysis_3">行政区划维度</label>
            </td>
        </tr>
    </table>
    <input type="button" value="test" id="test" />
</body>
</html>
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原文地址：https://www.cnblogs.com/junjieok/p/2694697.html