<html>
<head>
<title>Validator</title>
<script type="text/javascript">
function checkForm() {
if (window.confirm("Are you sure you want to sumbit this form?")) {
return true;
}
return false;
}
</script>
</head>
<body>
<form action="2.html" onsubmit="return checkForm()">
Please click the submit button:<br>
<input type="text" name="text" value="text"><br>
<input type="submit">
</form>
</body>
</html>
原文：http://jlins.blog.51cto.com/4487484/1588026