Need the Javascript equivalent of this C# code to add values to a cookie

Question

I need some help creating the necessary Javascript to add values to an existing cookie. I know how to do it in c#, but it needs to be done in Javascript in this scenario.

This is the C# Code:

HttpCookie myCookie = HttpContext.Current.Request.Cookies["SiteSettings"];
myCookie.Values.Add(varName, varValue);
myCookie.Expires = DateTime.Now.AddYears(1);
HttpContext.Current.Response.Cookies.Add(myCookie);

Can anyone help me convert this to Javascript? I've searched high and low on the internet, and most tutorials don't have a way of specifying the cookie (this site has more than one cookie).

Thank you very much, Andrew

Really? tinyurl.com/cfsuy6

Justin Johnson
– Justin Johnson

2010-07-30 20:22:17 +00:00
Commented Jul 30, 2010 at 20:22 — Justin Johnson
– Justin Johnson, Commented Jul 30, 2010 at 20:22

Jani Hartikainen · Accepted Answer · 2010-07-30 18:59:24Z

4

Not sure where you've looked, since the first hit on google for "javascript cookies" is this excellent article by ppk: http://www.quirksmode.org/js/cookies.html

It should answer your question and explain other JS-related cookie-nuances, including example functions for handling cookies in a more sensible way than string concatenation.

answered Jul 30, 2010 at 18:59

Jani Hartikainen

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Comments

James Curran · Accepted Answer · 2010-07-30 18:58:06Z

2

I believe:

document.cookie= varName + "=" + varValue + ";expires=" + new Date().toUTCString;

That, however, sets the expiration time to now. I don't know how to add a year to it.

answered Jul 30, 2010 at 18:58

James Curran

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1 Comment

Dagg Nabbit Over a year ago

var d=new Date(); d.setFullYear(d.getFullYear()+1);

Dagg Nabbit · Accepted Answer · 2010-07-30 19:01:24Z

There's some good info on javascript handling of cookies here: http://www.quirksmode.org/js/cookies.html

// from your example

var myCookie = readCookie("SiteSettings");
createCookie(varName, varValue, 365);

// from http://www.quirksmode.org/js/cookies.html

function createCookie(name,value,days) {
  if (days) {
    var date = new Date();
    date.setTime(date.getTime()+(days*24*60*60*1000));
    var expires = "; expires="+date.toGMTString();
  }
  else var expires = "";
  document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
  var nameEQ = name + "=";
  var ca = document.cookie.split(';');
  for(var i=0;i < ca.length;i++) {
    var c = ca[i];
    while (c.charAt(0)==' ') c = c.substring(1,c.length);
    if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
  }
  return null;
}

Merrimack · Accepted Answer · 2010-07-30 19:12:13Z

1

I suggest that you take a look at this jQuery plugin: http://plugins.jquery.com/project/cookie. Makes cookie manipulation very easy and it is cross browser safe.

answered Jul 30, 2010 at 19:12

Merrimack

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Comments

Azhar · Accepted Answer · 2010-08-09 09:03:09Z

0

This will work and will give the desired result

var d = new Date();

document.cookie= varName + "=" + varValue + ";expires=" 
    + new Date((d.getFullYear()+1), d.getMonth(), d.getUTCDate()).toUTCString());

see the article

Javascript - Cookies

edited Aug 9, 2010 at 9:03

answered Jul 30, 2010 at 19:21

Azhar

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