第1个回答 2011-05-22
<html>
<head>
<script type="text/javascript">
function test(){
var x=document.a.b.value
var rg=new RegExp("@")
if(rg.test(x))
{
alert(x)
return true
}else{
alert(x)
document.a.b.blur()
return false
}
}
</script>
</head>
<body>
<form name="a" action="submitpage.htm" onsubmit="return test()" method="post">
Email: <input type="text" name="b" size="30">
<input type="submit" value="Submit">
</form>
</body>
</html>