js select 用法

<html>
<body>
    <select id="osel">
    </select>

    <script language="javascript" type="text/javascript">
<!--
        var osel = document.getElementById("osel");
//        var newarr = [
//                                 ['A', 'B'],
//                                 ['C', 'D'],
//                                ['E', 'F']
//                            ];
        var item = new Array();
        for (var i = 0; i < 10; i++) {
            item[i] = i + 1;
        }
        for (var i = 0; i < item.length; i++) {
            osel.options.add(new Option(item[i], i))
        }
//-->
    </script>
   

    <script language="javascript" type="text/javascript">
        function test() {
            var osel = document.getElementById("osel");
            alert(osel.selectedIndex);
            alert(osel.options[osel.selectedIndex].text);
            alert(osel.options[osel.selectedIndex].value);
        }
    </script>

    <input id="Button1" type="button" value="button" onclick="test();" />
</body>
</html>

原文地址:https://www.cnblogs.com/shuyu/p/1704332.html