復制代碼 代碼如下:
<!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">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>js 獲取radio按鈕值的實例</title>
</head>
<body>
<form id="form1" name="form1" method="post" action="">
<p>
<label>
<input type="radio" name="RadioGroup1" value="單選" id="RadioGroup1_0" />
單選</label>
<br />
<label>
<input type="radio" name="RadioGroup1" value="單選" id="RadioGroup1_1" />
單選</label>
<br />
<label>
<input name="RadioGroup1" type="radio" id="RadioGroup1_2" value="單選" />
單選</label>
<br />
<label>
<input type="radio" name="RadioGroup1" value="單選" id="RadioGroup1_3" />
單選</label>
<input type="submit" name="button" id="button" value="提交" onclick="javascript:return checksubmit()" />
<br />
</p>
</form>
<script>
function checksubmit()
{
if( GetRadioValue('RadioGroup1') )
{
alert('有選');
}
else
{
alert('沒選');
}
}
function GetRadioValue(RadioName){
var obj;
obj=document.getElementsByName(RadioName);
if(obj!=null){
var i;
for(i=0;i<obj.length;i++){
if(obj[i].checked){
return obj[i].value;
}
}
}
return null;
}
</script>
</body>
</html>