萬盛學電腦網 >> 網頁制作 >> 腳本Html教程 >> select中添加、修改、刪除option元素
select中添加、修改、刪除option元素
<!doctype html public "-//w3c//dtd html 4.0 transitional//en">
<html>
<head>
<title>javascript select options text value</title>
<meta name="keywords" content="javascript select options text value add modify delete set">
<meta name="description" content="javascript select options text value add modify delete set">
<script language="javascript">
<!--
// Author: [email protected]
// Modify: [email protected]
function watch_ini(){ // 初始
for(var i=0; i<arguments.length; i++){
var oOption=new Option(arguments[i],arguments[i]);
document.getElementById("MySelect").options[i]=oOption;
}
}
function watch_add(f){ // 增加
var oOption=new Option(f.word.value,f.word.value);
f.keywords.options[f.keywords.length]=oOption;
}
function watch_sel(f){ // 編輯
f.word.value = f.keywords.options[f.keywords.selectedIndex].text;
}
function watch_mod(f){ // 修改
f.keywords.options[f.keywords.selectedIndex].text = f.word.value;
}
function watch_del(f){ // 刪除
f.keywords.options.remove(f.keywords.selectedIndex);
}
function watch_set(f){ // 保存
var set = "";
for(var i=0; i<f.keywords.length; i++){
set += f.keywords.options[i].text + ";";
}
confirm(set);
}
//-->
</script>
</head>
<body>
<form name="watch" method="post" action="">
<select id="MySelect" name="keywords" size="10" onchange="watch_sel(this.form)"></select><br>
<script language="javascript">
<!--
watch_ini("我","你","?","他","她","它","爾"); // 初始關鍵詞
//-->
</script>
<input type="text" name="word" /><br />
<input type="button" value="增加" onclick="watch_add(this.form);" />
<input type="button" value="修改" onclick="watch_mod(this.form);" />
<input type="button" value="刪除" onclick="watch_del(this.form);" />
<input type="button" value="保存" onclick="watch_set(this.form);" />
</form>
</body>
</html>
- 上一頁:動態的改變IFrame的高度
- 下一頁:html無刷新分頁前端代碼
