Setting BG Color with a cookie function

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06-10-2005, 03:40 PM

CarolinaN

SEO Junior

Join Date: Jun 2005

Posts: 2

Setting BG Color with a cookie function

I appreciate everyone that has looked at my posts. I have one last script to understand from the book that I am studying, and then I am off to the book store to get a better book. So if you will please look at this code and let me know what I am doing wrong I will be very grateful.

I simply want to learn how to create a cookie that is assigned the user’s favorite color. And change the background color of the document to that color. So far I think I may be storing it in the cookie correctly, and I have a function that sets the background color, but I don’t think I am recalling it properly when I reopen the web page.

Code:

<html>
<head>
<title>Set BGcolor with cookie</title>
<script language="JavaScript">
var yourcolor=""
function makeCookie(form){
	var when = new Date();
	when.setTime(when.getTime() + 24 * 60 * 60 * 1000);
					// 24 hours from now
	when.setFullYear(when.getFullYear() + 1);
					// One year from now
	ycolor=document.form1.yourcolor.value;
	document.cookie=escape("BGcolor")+"="+escape(ycolor)+
		";expires="+when.toGMTString();
	alert(document.cookie);
		document.bgColor=document.form1.yourcolor.value;

}



	function setColor(form) {
		ycolor=document.form1.yourcolor.value;
		var position=document.cookie.indexOf("BGcolor=");
			if(document.cookie == ""){
			alert("No cookies  totay");
			return false;
			}
		else {
			if ( position != -1){
			var begin = position + 5;
			var end=document.cookie.indexOf(";", begin);
			if(end == -1)
				{ end=document.cookie.length;
				}
			ycolor= unescape(document.cookie.substring(begin, end));
		document.bgColor=document.form1.yourcolor.value;
		}}
	}
</script>
</head>
<body onLoad="setColor()">
<h2>Background Color</h2>

<form name="form1">
<p>What color would you like the background to be? <br>
	<input type="text" name="yourcolor" size="30">
	</p>
	<p><input type="button" value="Make cookie" onclick="makeCookie();">
	</p>

</form></body></html>

CarolinaN

06-11-2005, 12:36 AM

Paz

SEO GUY Moderator

Join Date: Sep 2004

Location: Antalya, Turkey

Posts: 4,113 Paz has a spectacular aura about

Hi Carolina,

firstly welcome to the forum!

I'm sorry no one's answered your post.

I abandoned all but the most basic javascript because of security issues (and service pack 2), cross-browser issues, and it's not se friendly much of the time. I prefer to use plain html or asp now, but many use php. Tell us a bit more about the aims of your site, and we can make some general suggestions about how you should move forward - maybe save you some time!

I think you have a duff book! There are a few really good web resources with online tutorials or sites where you can copy and paste working solutions that you can modify.

Try this one first (for creating cookies):
http://www.js-examples.com/javascript/?view=665

Then this more advanced one for modifying cookies (but has documentation):
http://www.quirksmode.org/js/cookies.html

Also, sometimes the most simple code works ok in IE6, but doesn't in IE 5, Netscape/Mozilla (and vice versa) without some modification, so you should test your scripts with IE6, IE5, NS7, and maybe NS 4.79.

Cheers,
Paz.

__________________
10.3 million entries for Hotels in Turkey but I'm still chipping away.

Last edited by Paz : 06-11-2005 at 12:46 AM.

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