?? listboxselectedindexexample.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">
<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 an option in the listbox and click "Show Selected Index".<br />
<input type="button" value="Show Selected Index" onclick="showSelectedIndex()" />
</form>
</body>
</html>
?? 快捷鍵說明
復(fù)制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號
Ctrl + =
減小字號
Ctrl + -