大神们，为什么我的点击了没有弹窗
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>我们互动下</title>
<script type="text/javascript">
function rec()
{var mython("关注JS高级篇");
alert (mython);
}
</script>
</head>
<body>
<input name="button" type="button"onclick="rec()" value="JS进阶篇" />
</body>
</html>
加上等号就好了
