HTML實現單項選擇，並輸出選項名。
阿新 • • 發佈：2019-01-04
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'index.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
<script type="text/javascript">
function save() {
var index=document.getElementById("single").selectedIndex;//得到選型索引
var cityName=document.getElementById("single").options[index].text;//得到選項內容
alert(cityName);
}
</script>
</head>
<body>
<select size="3" name="single" id="single">
<option value="1" selected="selected" id="bj">北京</option>
<option value="2" id="hz">杭州</option>
<option value="3" id="cq">重慶</option>
</select>
<input type="submit" value="儲存" onclick="save()">
</body>
</html>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'index.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
<script type="text/javascript">
function save() {
var index=document.getElementById("single").selectedIndex;//得到選型索引
var cityName=document.getElementById("single").options[index].text;//得到選項內容
alert(cityName);
}
</script>
</head>
<body>
<select size="3" name="single" id="single">
<option value="1" selected="selected" id="bj">北京</option>
<option value="2" id="hz">杭州</option>
<option value="3" id="cq">重慶</option>
</select>
<input type="submit" value="儲存" onclick="save()">
</body>
</html>