下面这断代码 里面的单选框不管选择哪个城市,通过JS显示出来的值都是一样的呢都为beijing
01 <!-- ------------------------------ -->
02 <!-- 文件范例:11-10.htm -->
03 <!-- 文件说明:插入单选框 -->
04 <!-- ------------------------------ -->
05 <html>
06 <head>
07 <title>插入单选框</title>
<script language="JavaScript">
function aa()
{
var rightanser=document.getElementById("city").value;
alert(rightanser);
}
</script>
08 </head>
09 <body>
10 <h1>用户调查</h1>
11 <Form action=mailto:[email protected] method=get name=invest>
12 姓名:<input type="text" name="username" size=20><br>
13 网址:<input type="text" name="url" size=20 maxlength=50 value="http://"><br>
14 密码:<input type="password" name="password" size=20 maxlength=8><br>
15 确认密码:<input type="password" name="password_confirm" size=20 maxlength=8><br>
16 请上传你的照片:<input type="File" name="File"><br>
17 请选择你喜欢的音乐:
18 <input type="checkbox" name="m1" value="rock" checked>摇滚乐
19 <input type="checkbox" name="m2" value="jazz">爵士乐
20 <input type="checkbox" name="m2" value="pop">流行乐<br>
21 请选择你居住的城市:
22 <input type="radio" name="city" value="beijing" checked>北京
23 <input type="radio" name="city" value="shanghai">上海
24 <input type="radio" name="city" value="nanjing">南京
<input type="button" value="dddd" onclick="aa()">南京
25 </Form>
26 </body>
27 </html>
01 <!-- ------------------------------ -->
02 <!-- 文件范例:11-10.htm -->
03 <!-- 文件说明:插入单选框 -->
04 <!-- ------------------------------ -->
05 <html>
06 <head>
07 <title>插入单选框</title>
<script language="JavaScript">
function aa()
{
var rightanser=document.getElementById("city").value;
alert(rightanser);
}
</script>
08 </head>
09 <body>
10 <h1>用户调查</h1>
11 <Form action=mailto:[email protected] method=get name=invest>
12 姓名:<input type="text" name="username" size=20><br>
13 网址:<input type="text" name="url" size=20 maxlength=50 value="http://"><br>
14 密码:<input type="password" name="password" size=20 maxlength=8><br>
15 确认密码:<input type="password" name="password_confirm" size=20 maxlength=8><br>
16 请上传你的照片:<input type="File" name="File"><br>
17 请选择你喜欢的音乐:
18 <input type="checkbox" name="m1" value="rock" checked>摇滚乐
19 <input type="checkbox" name="m2" value="jazz">爵士乐
20 <input type="checkbox" name="m2" value="pop">流行乐<br>
21 请选择你居住的城市:
22 <input type="radio" name="city" value="beijing" checked>北京
23 <input type="radio" name="city" value="shanghai">上海
24 <input type="radio" name="city" value="nanjing">南京
<input type="button" value="dddd" onclick="aa()">南京
25 </Form>
26 </body>
27 </html>
<script language="JavaScript">
function aa() {
city = document.getElementsByName("city");
for (var i=0;i <city.length;i++) {
if (city[i].checked) {
alert(city[i].value)
break;
}
}
}
</script>
<!-- ------------------------------ -->
<!-- 文件范例:11-10.htm -->
<!-- 文件说明:插入单选框 -->
<!-- ------------------------------ -->
<html>
<head>
<title>插入单选框</title>
<script language="JavaScript">
function aa() {
var city = document.getElementsByName("city");
for (var i=0;i <city.length;i++) {
if (city[i].checked) {
alert(city[i].value) ;
break;
}
}
var m1 = document.getElementsByName("m1");
for (var i=0;i <city.length;i++) {
if (m1[i].checked) {
alert(m1[i].value) ;
}
}
}
</script> </script>
</head>
<body>
<h1>用户调查</h1>
<Form action=mailto:[email protected] method=get name=invest>
姓名:<input type="text" name="username" size=20><br>
网址:<input type="text" name="url" size=20 maxlength=50 value="http://"><br>
密码:<input type="password" name="password" size=20 maxlength=8><br>
确认密码:<input type="password" name="password_confirm" size=20 maxlength=8><br>
请上传你的照片:<input type="File" name="File"><br>
请选择你喜欢的音乐:
<input type="checkbox" name="m1" value="rock" checked>摇滚乐
<input type="checkbox" name="m1" value="jazz">爵士乐
<input type="checkbox" name="m1" value="pop">流行乐<br>
请选择你居住的城市:
<input type="radio" name="city" value="beijing" checked>北京
<input type="radio" name="city" value="shanghai">上海
<input type="radio" name="city" value="nanjing">南京
<input type="button" value="dddd" onclick="aa()">南京
</Form>
</body>
</html>
var boxes = document.getElementsByName("m1");
var checkTypeId = [];//存放选择的复选框的值
for(var i=0;i<boxes.length;i++){
if(boxes[i].checked){
checkTypeId[checkTypeId.length] = boxes[i].value;
}
}
//选中的
for(var c=0;c<checkTypeId.length;c++){
alert(checkTypeId[c]);
}}复选框的name要相同:<input type="checkbox" name="m1" value="rock" checked>摇滚乐
<input type="checkbox" name="m1" value="jazz">爵士乐
<input type="checkbox" name="m1" value="pop">流行乐<br>