jQuery Cookie Utilities

cookie-utilities

// Generic function to create cookies with a variable name, the value, and time for the cookie to expire.
setCookie: function(c_name, value, exdays){
	var exdate = new Date();
	exdate.setDate(exdate.getDate() + exdays);
	var c_value = escape(value) + ((exdays == null) ? "" : "; expires=" + exdate.toUTCString()) + "; path=/";
  document.cookie = c_name + "=" + c_value;
},

// Generic function to get a cookie by it's name and load the value from it.
getCookie: function(c_name){
	var i, x, y, ARRcookies = document.cookie.split(";");
	var returnval = "";
	for (i = 0; i < ARRcookies.length; i++){
		x = ARRcookies[i].substr(0, ARRcookies[i].indexOf("="));
		y = ARRcookies[i].substr(ARRcookies[i].indexOf("=") + 1);
		x = x.replace(/^\s+|\s+$/g, "");
		if (x == c_name){
			returnval = unescape(y);
		}
	}
	return returnval;
},

// checks if cookies are enabled, returns boolean value
cookiesEnabled: function() {
	// first we'll split this cookie up into name/value pairs
	// note: document.cookie only returns name=value, not the other components
	var all_cookies = document.cookie.split(';');
	var temp_cookie = '';
	var cookie_name = '';
	var cookie_value = '';
	var cookie_found = false; // set boolean t/f default f

	for (i = 0; i < all_cookies.length; i++){
		// now we'll split apart each name=value pair
		temp_cookie = all_cookies[i].split('=');
		// and trim left/right whitespace while we're at it
		cookie_name = temp_cookie[0].replace(/^\s+|\s+$/g, '');
		// if the extracted name matches the session cookie name 
		if (cookie_name == 'sid'){
			// we need to handle case where cookie has no value but exists (no = sign, that is):
			if (temp_cookie.length > 1){
				cookie_value = unescape(temp_cookie[1].replace(/^\s+|\s+$/g, ''));
			}
			if (cookie_value.length > 0){
				cookie_found = true;
				break;
			}
		}
		temp_cookie = null;
		cookie_name = '';
	}
	return cookie_found;
},