例题只能保存一次cookie，如果我想保存多次怎么办？就是我在文本框每次输入不同的信息，点击设置都能保存进去？
<!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>
<title>cookie插件</title>
<link href="style.css" rel="stylesheet" type="text/css" />
<script type="text/javascript" src="http://www.imooc.com/data/jquery-1.8.2.min.js"></script>
<script src="http://www.imooc.com/data/jquery.cookie.js" type="text/javascript"></script>
</head>
<body>
<div id="divtest">
<div class="title">
<span class="fl">cookie插件</span>
<span class="fr">
<input id="btnSet" type="button" value="设置" />
</span>
</div>
<div class="content">
<span class="fl">邮箱：</span><br />
<input id="email" name="email" type="text" /><br />
<input id="chksave" type="checkbox" />是否保存邮箱
</div>
</div>
<script type="text/javascript">
$("body").append("<p>" + $.cookie("email") + "</p>");
$(function () {
if ($.cookie("email")) {
$("#email").val($.cookie("username"));
}
$("#btnSet").bind("click", function () {
if ($("#chksave").is(":checked")) {
$.cookie("email",$("#email").val(), {
path: "/", expires: 7
})
}
else {
$.cookie("email",null, {
path: "/"
})
}
});
});
</script>
</body>
</html>
