<html>
<head>
</head>
<script language=javascript>
<!--
function check()
{
if (form1.t1[1].checked)
{
if (form1.t2.value=="")
{alert("输入错误!");
form1.t2.focus();
return false;
}
}
}
-->
</script>
<body>
<form name="form1" method="post" action="" onsubmit="return check()">
<input type="radio" name="t1" value="是" checked>
<input type="radio" name="t1" value="否">
<input type="text" name="t2"><br>
<input type="submit" value="提交" >
</form>
</body>
</html>
<head>
</head>
<script language=javascript>
<!--
function check()
{
if (form1.t1[1].checked)
{
if (form1.t2.value=="")
{alert("输入错误!");
form1.t2.focus();
return false;
}
}
}
-->
</script>
<body>
<form name="form1" method="post" action="" onsubmit="return check()">
<input type="radio" name="t1" value="是" checked>
<input type="radio" name="t1" value="否">
<input type="text" name="t2"><br>
<input type="submit" value="提交" >
</form>
</body>
</html>
解决方案 »
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