Duplicate cookies[Answered] RSS

• • Reply
  dlchase

  Member

  361 Points

  1581 Posts

  Duplicate cookies

  Aug 11, 2020 10:03 PM|dlchase|LINK

  I have 2 pages that create or update cookies on my asp.net webforms app.  I added a way to display the key and values of all cookies in one of the pages and am finding some of them have doubled.  How can that happen as I thought if you set the value of a cookie that it would create if not there and update if already there.  I am setting them in code-behind as well as javascript. Below is what I use in javascript to set a cookie and also in code-behind to set a cookie value. What am I missing?

  function getCookie( name ) {
    var start = document.cookie.indexOf( name + "=" );
    var len = start + name.length + 1;
    if ( ( !start ) && ( name != document.cookie.substring( 0, name.length ) ) ) {
      return null;
    }
    if ( start == -1 ) return null;
    var end = document.cookie.indexOf( ";", len );
    if ( end == -1 ) end = document.cookie.length;
    return unescape( document.cookie.substring( len, end ) );
  }
  
  function setCookie( name, value, expires, path, domain, secure ) {
    var today = new Date();
    today.setTime( today.getTime() );
    if ( expires ) {
      expires = expires * 1000 * 60 * 60 * 24;
    }
    var expires_date = new Date( today.getTime() + (expires) );
    document.cookie = name+"="+escape( value ) +
      ( ( expires ) ? ";expires="+expires_date.toGMTString() : "" ) + //expires.toGMTString()
      ( ( path ) ? ";path=" + path : "" ) +
      ( ( domain ) ? ";domain=" + domain : "" ) +
      ( ( secure ) ? ";secure" : "" );
  }
  
  
  Response.Cookies("x_amount").Value = Math.Round(dtr("ROCustomerTotal"), 2).ToString
  

  DavidInBD
• • Reply
  mgebhard

  All-Star

  53641 Points

  24002 Posts

  Re: Duplicate cookies

  Aug 12, 2020 01:11 AM|mgebhard|LINK

  dlchase

  What am I missing?

  Debugging.  Your missing debugging.

• • Reply
  yij sun

  Contributor

  3980 Points

  1560 Posts

  Re: Duplicate cookies

  Aug 12, 2020 02:28 AM|yij sun|LINK

  Hi dlchase,

  Accroding to your description and codes,I create a test.I suggest you could add checkCookie function in javascript.

  Just like this:

  function checkCookie() {
    var user=getCookie("username");
    if (user != "") {
      alert("Welcome again " + user);
    } else {
       user = prompt("Please enter your name:","");
       if (user != "" && user != null) {
         setCookie("username", user, 30);
       }
    }
  }

  More details,you could refer to below article:

  https://www.w3schools.com/js/tryit.asp?filename=tryjs_cookie_username

  Best regards,

  Yijing Sun

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• • Reply
  bruce (sqlwo...

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  58444 Points

  15769 Posts

  Re: Duplicate cookies

  Aug 12, 2020 03:55 AM|bruce (sqlwork.com)|LINK

  document.cookie returns a string of name/value pairs separated by a ; and space. the names need not be unique. the Response.Cookie api prevents duplication, but in fact dups are allowed.

  bruce (sqlwork.com)