<!DOCTYPE HTML>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title> 失焦事件 </title>
<script type="text/javascript">
function message(){
alert("请确定已输入密码后，在移开!"); }
</script>
</head>
<body>
<form>
用户:<input name="username" type="text" value="请输入用户名！" onblur = "message()">
密码:<input name="password" type="text" value="请输入密码！" onblur = "message()">
</form>
</body>
</html>没用问题