Setting/Retrieving Cookies

Mike Henson · #1 (**permalink**) Jan 10th, 2006, 17:53

I apologise if this is in the wrong Forum but I'm unsure into which category "cookies" fall.

I would like visitors to nominate the style of the site when they visit.

I don't need them to log-in, just select a "style" on their first visit and place a cookie accordingly, but I don't have a clue how setup such a procedure.

Can anyone help or point me in the right direction?

Thank you

AnneJan · #2 (**permalink**) Jan 10th, 2006, 20:16

Hmm difficult. I will give you a script: User can choose background, cookie will be set and remembers background. Hope you'll like this.

HTML: Select all

<!-- TWO STEPS TO INSTALL COOKIE - FAVORITE BACKGROUND COLOR:

   1.  Paste the designated coding into the HEAD of your HTML document 
   2.  Put the last script into the BODY of your HTML document  -->

<!-- STEP ONE: Copy this code into the HEAD of your HTML document  -->
		  
<HEAD>

<SCRIPT LANGUAGE = "JavaScript">
<!-- Original:  Mattias Sjoberg -->

<!-- Begin
var expDays = 30;
var exp = new Date(); 
exp.setTime(exp.getTime() + (expDays*24*60*60*1000));
function color(){
var favColor = GetCookie('color');
if (favColor == null) {
favColor = prompt("What is your favorite background color?");
SetCookie('color', favColor, exp);
}
document.bgColor=favColor;
return favColor;
}
function set(){
favColor = prompt("What is your favorite background color?");
SetCookie ('color', favColor, exp);
}
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);  
var cval = GetCookie (name);  
document.cookie = name + "=" + cval + "; expires=" + exp.toGMTString();
}
// End -->
</SCRIPT>

<!-- STEP TWO: Copy this code into the BODY of your HTML document  -->

<BODY>

<SCRIPT>
document.write('your favorite background color is : ' + color());
</SCRIPT><br>
<a href="javascript:set()">Change background color</a>
</textarea><br></td></tr>
</table>
</form>

<p><center>
<font face="arial, helvetica" size="-2">Free JavaScripts provided<br>
by <a href="http://javascriptsource.com">The JavaScript Source</a></font>
</center><p>

Mike Henson · #3 (**permalink**) Jan 10th, 2006, 20:34

AnneJan

Thank you very much indeed, I shall give it a try, I'm sure it will work fine.

Again, many thankx

Mike

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Setting/Retrieving Cookies