Re: Cookies (how to use them?)

["Meredith, Chris I." <MerediCh@DSOTSO.SCH.GE.COM>]

I'm not sure if this will help, but it might put you on the right track   
for your cookie problem.
I used this cookie to have a new visitor pushed to a policy page and once   
they accept the policy, they aren't automatically linked to the policy   
page.

Use this JavaScript to have the document recognize to the cookie.  When   
they come on, use the onLoad command in the body to reference a function   
that checks the cookie.
Then use the onUnload command to set the cookie so when they leave, the   
cookie is told that they have visited the site.
The function UpStart at the end checks the cookie.
But I used a form to set the cookie, you'd have to write a separate   
function to set yours.


<script>
    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" : "");
    }

    function DeleteCookie (name) {
      var exp = new Date();
      exp.setTime (exp.getTime() - 1);  // This cookie is history
      var cval = GetCookie (name);
      document.cookie = name + "=" + cval + "; expires=" +   
exp.toGMTString();
    }

    function UpStart () {
      window.close();
      if(GetCookie('DemoName') == 'Pol3051'){
         window.open('http://gww.geps.ge.com');
    }
      else {
         window.open('http://weber.geps.ge.com/policies/pol3051.htm');
    }
    }


>
> From: kristian@generation.net (Christian Lanctot)
> Date: Wed, 20 Mar 1996 22:23:49 -0500
> Subject: Cookies (how to use them?)
>
> Help!
>
>         How do you use cookies in javascript. I'm still not quite clear   
on
> this. What i want to do is set a cookie when a user comes into my site.   
And
> the next time he comes back, read that coockie and display the proper
> information.
>
>         I want to use it so that a user can enter his name and a couple   
of
> settings (preferences) and save them into different cookies that i will
> recall whenever the user comes back to my page. I've read the Docs on
> Cookies, but there really isn't any practical information that i've   
found
> that relates to using Cookies with Javascript.
>
>         Anybody know of a tutorial or FAQ for setting and recalling   
cookies
> with JavaScript?
>
> thanks.
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