如何把radio里被选择的值传到javascript里面

2012-04-20

怎么把radio里被选择的值传到javascript里面？HTML codehtml xmlnshttp://www.w3.org/1999/xhtmlhead

怎么把radio里被选择的值传到javascript里面？

HTML code

<html xmlns="http://www.w3.org/1999/xhtml"><head>    <title></title>    <script type="text/javascript">    function che() {     alert();      }    </script></head><body><form name="rad" method="post" action="#"><div><p><input type="radio" value="1" name="r"/>1</p><p><input type="radio" value="2" name="r"/>2</p></div><input type="button" value="check" onclick="che()"/></form></body></html>

我想让按键被点击之后，显示出我所选择的radio的value

[解决办法]

HTML code

<html xmlns="http://www.w3.org/1999/xhtml"><head>    <title></title>    <script type="text/javascript">    function che() {        var rs = document.getElementsByName('r');        for (var i = 0, len = rs.length; i < len; i++) {            if (rs[i].checked) {                alert(rs[i].value);                break;            }        }    }    </script></head><body><form name="rad" method="post" action="#"><div><p><input type="radio" value="1" name="r"/>1</p><p><input type="radio" value="2" name="r"/>2</p></div><input type="button" value="check" onclick="che()"/></form></body></html>
[解决办法]
jquery代码
<script language="javascript">
   $("input[type=radio]").click(function(){
       alert($(this).val());
   });
</script>
[解决办法]
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
<head>
<title> New Document </title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<script type="text/javascript">
function che() {
var list = document.forms["rad"].elements("r");
for(var i=0;i<list.length;i++){
var radio = list[i];
if(radio.checked){
alert(radio.value);
}
}
}
</script>
</head>

<body>
<form name="rad" method="post" action="#">
<div>
<p><input type="radio" value="1" name="r"/>1</p>
<p><input type="radio" value="2" name="r"/>2</p>
</div>

<input type="button" value="check" onclick="che()"/>
</form>
</body>
</html>


俺是新手，不要拍我！！嘿嘿

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如何把radio里被选择的值传到javascript里面