listboxmultipleselectionsexample.htm

来自「这是javascript高级程序设计的源码」· HTM 代码 · 共 25 行

HTM
25
字号
<html>
    <head>
        <title>Listbox Selected Index Example</title>
        <script type="text/javascript">
            function showSelectedIndex() {
                var oListbox = document.getElementById("selListbox");
                alert(oListbox.selectedIndex);
            }
        </script>
    </head>
    <body>
        <form>
            <select id="selListbox" size="5" multiple="multiple">
                 <option>Original Value 0</option>
                 <option>Original Value 1</option>
                 <option>Original Value 2</option>
                 <option>Original Value 3</option>
                 <option>Original Value 4</option>
            </select><br />
            Select more than one option (by using the Shift or Ctrl keys) in the listbox and click "Show Selected Index".<br />
            <input type="button" value="Show Selected Index" onclick="showSelectedIndex()" />
       </form>
    </body>
</html>

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