JavaScript 删除 ASP.NET 设置的多值 Cookie 的方法

程序员金磊技术 2022年11月17日

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需要注意HttpOnly,Path等属性。完整的测试代码：

ASPX 代码
<%@ Page Language=”C#” %>

<!DOCTYPE html PUBLIC “-//W3C//DTD XHTML 1.0 Transitional//EN”
“http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd“>
<script runat=”server”>

protected void Page_Load(object sender, EventArgs e)
{
    if (!Page.IsPostBack)
    {
      HttpCookie Cookie = new HttpCookie(“user”);
      Cookie.Values.Add(“name”, “mxh”);
      Cookie.Values.Add(“id”, “net_lover”);
      Cookie.Expires = DateTime.Now.AddDays(1);
      Cookie.HttpOnly = false;
      Cookie.Path = “/”;
      Response.Cookies.Add(Cookie);
    }
}

protected void Button1_Click(object sender, EventArgs e)
{
    if (Request.Cookies[“user”] == null)
    {
      Response.Write(“已经删除”);
    }
    else
    {
      Response.Write(“Cookie值： ” + Request.Cookies[“user”][“name”]);
    }

}
</script>
<html xmlns=”http://www.w3.org/1999/xhtml“>
<head>
<title>dotnet.aspx.cc Cookie 测试</title>
<script type=”text/javascript”>
    function deleteCookie() {
      var expires = new Date();
      expires.setUTCFullYear(expires.getUTCFullYear() – 1);
      document.cookie = “user=name=&id=; expires=” + expires.toUTCString() + “; path=/”;
    }
</script>
</head>
<body>
<form id=”form1″ runat=”server”>
<input type=”button” value=”删除” onclick=”deleteCookie()” />
<asp:Button ID=”Button1″ runat=”server” OnClick=”Button1_Click” Text=”查看Cookie” />
</form>
</body>
</html>