Deleting cookies by expiration not working

Question

2.50/5 (2 votes)

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I'm trying to make cookies expire but it's not working:

I use

C#

function delete_Cookie( name, path, domain ) {
    if ( Get_Cookie( name ) )
        {
        document.cookie = name + "=" +
    ( ( path ) ? ";path=" + path : "") +
    ( ( domain ) ? ";domain=" + domain : "" ) +
    ";expires=Thu, 01-Jan-1970 00:00:01 GMT";
        alert(name;);
        }
    else
        alert("none");
}

That alert alert(name); show the name of the cookie correctly, however it's not working, because I have:

XML

var id_sala = lerCookie(&#39;idsala&#39;);
document.write(" COOKIE lida idsala: " + lerCookie('idsala')+ "<br>");

And even if close the browser and go directly to the URL it still shows the cookie... I already commented the cookie where I set it (just to make sure). I do it with JSP:

/*Cookie cookie = new Cookie("idsala", Integer.toString(id)); 
cookie.setMaxAge(365 * 24 * 60 * 60);
response.addCookie(cookie);)*/

That delete function is associated with a html button:

C#

function logout()
{
    delete_Cookie("idsala", "/", "");
    ( Get_Cookie( 'idsala' ) ) ? alert( Get_Cookie('idsala')) :
    alert( "it is gone");
}

I have no idea why this is happening, could you help me ? The only solution (for now..) is deleting cookies with the browser settings.

Posted 14-Apr-11 6:28am

Maxdd 7

Updated 14-Apr-11 6:33am

v2

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Jeffrey Enzo · Accepted Answer · 2011-04-15T00:17:00

You cannot directly delete a cookie on a user's computer. However, you can direct the user's browser to delete the cookie by setting the cookie's expiration date to a past date. The next time a user makes a request to a page within the domain or path that set the cookie, the browser will determine that the cookie has expired and remove it.

if (Request.Cookies["UserSettings"] != null)
{
    HttpCookie myCookie = new HttpCookie("UserSettings");
    myCookie.Expires = DateTime.Now.AddDays(-1d);
    Response.Cookies.Add(myCookie);
}

http://msdn.microsoft.com/en-us/library/ms178195.aspx[^]