Memory Code

**Cheeseweasel** · 12-06-2007, 04:42 PM

I run a forum where I recently used a script to make snow from the sky ('tis the season to be jolly). Unfortunately this script slightly slows down some users' browsers, so I built in a function to stop the snow. The function is as follows:

Code:

javascript:snowStorm.stop()

However, this function doesn't work site-wide so the users have to click the button on every page if they don't want to snow. The site doesn't use iFrames (so I can't make the button universal) and I don't intend to make any major adjustments to the site.

Is there any way of making the script remember if the user has clicked the button, even if only for one session? At present I am using an alternate skin which members may choose if they wish, but I'd much rather have a button which they can click and remembers it.

Any ideas?

Thanks
Cheeseweasel

**jscheuer1** · 12-06-2007, 05:23 PM

A javascript cookie would work fairly well for that, they can be hard to use, but:

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

explains it pretty well and provides create, read, and erase cookie functions that do all the heavy lifting and that most beginner to intermediate javascript folks can use. You can set (create) the name, value and days duration of a cookie, read a cookie's value, just see if it exists or not, and erase cookies by name, all with relative ease using these functions.

Basically, the first time someone stops the snow, also create a cookie. Then every time a page with snow on it is loading, check to see if the cookie is there and don't even start the snow if that cookie is present.

**boogyman** · 12-06-2007, 05:25 PM

use a cookie,

you will need to set a cookie for the skin "directory" as well if you want the skin to be remembered when the user comes back at a later time/date

Edit: .

oops. looks like john has faster fingers then myself, and alot more descripttive too

**Cheeseweasel** · 12-06-2007, 07:04 PM

Thanks for your help, but I'm not exactly a master coder. Could anybody please give me an example of how to use this code to create a cookie that carries out that function and a script for the webpage to read it?

**Master_script_maker** · 12-06-2007, 10:24 PM

try this:

Code:

function snowStorm.stop(set) {
if (set == null) {
var expire=new Date();
expire.setDate(expire.getDate()+5); //expires five days in the future
document.cookie='snowstop=yes; expires=expire.toGMTString; path=/';
}
//the rest of code to stop it
}
function checkcookie() {
var name="snowstop=";
var split=document.cookie.split(";");
for(var i=0;i < split.length; i++) {
var cookievals=split[i];
while (cookievals.charAt(0)==" ") cookievals = cookievals.substring(1,cookievals.length);
if (cookievals.indexOf(name) == 0) return cookievals.substring(name.length,cookievals.length);
}
return null;
} 
function bodyload() {
var cookieset = checkcookie();
if (cookieset != null) {
snowStorm.stop(true)
}

and state this in body tag:

Code:

<body onload="bodyload()">

**Cheeseweasel** · 12-07-2007, 04:00 PM

Thanks - only problem is that I only want that to happen when a certain button is pressed. How could I do that?

**Cheeseweasel** · 12-07-2007, 05:50 PM

(relocated from thread in the 'Javascript' board)

There is one function on a website I own that makes it "snow". Unfortunately this makes some very old computers work very slowly, so I have added a 'stop snow' button. However, users must press this on every single page and many have raised complaints concerning this.

Here is what I would like:

A JAVASCRIPT code to insert a button which creates a cookie which contains the function "javascript:snowStorm.stop()" and will be used every time the site is visited. It should expire within 2 days.

Please could somebody create a code to create and read the cookie?

Thanks
-Cheeseweasel

**Master_script_maker** · 12-07-2007, 09:01 PM

use this (valid netscape/firefox ver 6.2 and ie ver 4.0):

Code:

<button onclick="snowStorm.stop()">Stop Snow</button>

or this (valid netscape/firefox ver 3.0 and ie ver 3.0):

Code:

<input type="button" value="Stop Snow" onClick="snowStorm.stop()" />

**Master_script_maker** · 12-07-2007, 11:12 PM

try this:

Code:

function snowStorm.stop(set) {
if (set == null) {
var expire=new Date();
expire.setDate(expire.getDate()+2); //expires two days in the future
document.cookie='snowstop=yes; expires=expire.toGMTString; path=/';
}
//the rest of code to stop it
}
function checkcookie() {
var name="snowstop=";
var split=document.cookie.split(";");
for(var i=0;i < split.length; i++) {
var cookievals=split[i];
while (cookievals.charAt(0)==" ") cookievals = cookievals.substring(1,cookievals.length);
if (cookievals.indexOf(name) == 0) return cookievals.substring(name.length,cookievals.length);
}
return null;
} 
function bodyload() {
var cookieset = checkcookie();
if (cookieset != null) {
snowStorm.stop(true)
} else {
document.write("<input type='button' value='Stop Snow' onClick='snowStorm.stop()' />");

and add this:

Code:

<body onload="bodyload()">

P.S. What is the website?

**Cheeseweasel** · 12-07-2007, 11:47 PM

Do I need to make any amendments to that code? Will inserting it create the button? Where in the code do I insert it?

Thanks, but please answer the questions above as I've no clue how to use it

Thanks
Cheeseweasel

P.S. The site is www.midnafanforum.com

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