我有一個簡單的網頁,添加&動態刪除選擇元素的選項。該代碼可以正確處理鉻& IE瀏覽器,但在Firefox失敗(當我點擊添加什麼也不會發生&刪除按鈕甚至不露面?)添加/刪除選項在Firefox中失敗只有
你覺得我做錯了嗎?
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"><!-- InstanceBegin template="/Templates/homepage.dwt" codeOutsideHTMLIsLocked="false" -->
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title></title>
<script LANGUAGE="JavaScript" type = "text/javascript">
<!--
function addOption()
{
var listbox = document.getElementById("listbox");
var lastIndex = listbox.options.length-1;
var newOption = document.createElement("option");
newOption.text = "New";
newOption.value = "New";
try
{
listbox.add(newOption, lastIndex); // standards compliant; doesn't work in IE
}
catch (ex)
{
listbox.add(newOption, listbox.selectedIndex); // IE only
alert("In addOption(): " + ex);
}
}
function deleteOption()
{
//alert("1");
var listbox = document.getElementById("listbox");
var lastIndex = listbox.options.length-1;
if (lastIndex < 0)
return;
listbox.remove(lastIndex);
//alert("2");
}
-->
</script>
<style type="text/css" media="all">
<!--
div { text-align: center; }
button { width: 100px; height: 20px; }
#listbox { width: 200px; height: 200px;
-->
</style>
</head>
<body>
<div>
<select id="listbox" multiple="multiple">
<option>Test</option>
</select>
<button value="Add" onclick="addOption()"/>
<button value="Delete" onclick="deleteOption()"/>
</div>
</body>
<!-- InstanceEnd -->
</html>
謝謝,非常有幫助:) – Mack 2011-03-10 22:01:06