?? listboxmultipleselectionsexample.htm
字號:
<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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