If cookies exist...

A noob here
How can I check if a cookie (cookie1 for example) exists or not. Should I directly use it and see if it equals "" or what?
Also, where can I find a tutorial on how to use arrays in cookies?

 

Try to read the cookie, if it exists it will return its value, if not it will return a NULL value:

function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}

Code (markup):

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

 

Try searching for "javascript cookies" over search engines .. there are dozens of tutorials about them ..

here is a simple parameter on how to set cookies

document.cookie = "Name1=Value1; Name2=Value2; Name3=Value3";

get the cookies by simply referencing document.cookie, it however return a string of which you can parse to get the cookie and value you want

 

Thank you guys