The JavaScript Source: Cookies : ID Tracker

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Save a visitor's referral ID in a cookie ID on their computer. Then, you can you can access that ID cookie from the rest of your site. Useful to help you pay affiliate commissions or track Web site referrals.

When you first come to this page, it sets your ID cookie to "no id". Click here to reload with our referral ID. (note the ?JSS we added to that link!)

Notes

Created by: Ronnie T. Moore
Web Site: http://javascript.internet.com/
Posted: May 19, 2000

Source Code

Paste this source code into the designated areas.

External file

Paste this code into an external JavaScript file named: idTracker.js

function readID() {
  var expDays = 365; // number of days the cookie should last
  var expDate = new Date();
  expDate.setTime(expDate.getTime() +  (24 * 60 * 60 * 1000 * expDays));
  var id = GetCookie('id');
  if (id == null || id == "no id") {
    if (location.search.length > 1) id = location.search.substring(1, location.search.length);
    else id = "no id";
    if (id != GetCookie('id')) SetCookie('id', id, expDate);
  }

  // You can change the FORM location below
  // where the referral ID is stored on your page
  // You then access this element to get the ID
  document.idform.id.value = id;
}

function getCookieVal (offset) {
  var endstr = document.cookie.indexOf (";", offset);
  if (endstr == -1)
  endstr = document.cookie.length;
  return unescape(document.cookie.substring(offset, endstr));
}

function GetCookie (name) {
  var arg = name + "=";
  var alen = arg.length;
  var clen = document.cookie.length;
  var i = 0;
  while (i < clen) {
    var j = i + alen;
    if (document.cookie.substring(i, j) == arg)
    return getCookieVal (j);
    i = document.cookie.indexOf(" ", i) + 1;
    if (i == 0) break;
  }
  return null;
}

function SetCookie (name, value) {
  var argv = SetCookie.arguments;
  var argc = SetCookie.arguments.length;
  var expires = (argc > 2) ? argv[2] : null;
  var path = (argc > 3) ? argv[3] : null;
  var domain = (argc > 4) ? argv[4] : null;
  var secure = (argc > 5) ? argv[5] : false;
  document.cookie = name + "=" + escape (value) +
    ((expires == null) ? "" : ("; expires=" + expires.toGMTString())) +
    ((path == null) ? "" : ("; path=" + path)) +
    ((domain == null) ? "" : ("; domain=" + domain)) +
    ((secure == true) ? "; secure" : "");
}

window.onLoad=readID;

Head

Paste this code into the HEAD section of your HTML document.


<script type="text/javascript" src="idTracker.js"></script>

Body

Paste this code into the BODY section of your HTML document


<form name=idform>
ID: <input type=text name=id>
</form>

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Notes

Source Code

External file

Head

Body

User Comments

1. From: Matt Lynch
set up the script
10/31/2007 08:01:37

2. From: Lee (Admin)
11/07/2007 15:54:19

Navigation Menu

Internet.commerce

Internet.com

Developer Channel

Great Sites

Promotions

General

Notes

Source Code

External file

Head

Body

User Comments

1. From: Matt Lynchset up the script10/31/2007 08:01:37

2. From: Lee (Admin)11/07/2007 15:54:19

1. From: Matt Lynch
set up the script
10/31/2007 08:01:37

2. From: Lee (Admin)
11/07/2007 15:54:19