第1个回答 2020-10-31
<html>
<head>
<title>JS 判断 radio 单选按钮是否选中</title>
<script type="text/javascript">
function ValidateRadio()
{
var radioSelete = "Nothing"
var seletedValue = "";
for(i=0;i<document.form1.rValue.length;i++)
{
if(document.form1.rValue[i].checked)
{
radioSelete = "seleted";
seletedValue += document.form1.rValue[i].value + " ";
}
}
if(radioSelete == "Nothing")
{
alert("您一个都还没选呢!");
return false;
}
else
{
alert("您选中了:"+seletedValue);
return true;
}
}
</script>
</head>
<body>
<form name="form1">
<input type="checkbox" name="rValue" value="四川">四川
<input type="checkbox" name="rValue" value="江苏">江苏
<input type="checkbox" name="rValue" value="南京">南京
<input type="checkbox" name="rValue" value="天津">天津
<input type="checkbox" name="rValue" value="上海">上海
<input type="button" οnclick="return ValidateRadio()" value="验证">
</form>
</body>
</html>