Kyle's handy-dandy cookie scripts.

TastyCookies.js

/**
* @class Cookie
* @description Helper functions for adding and deleting cookies.
*/
var Cookie = {
	/**
	* @method delete
	* @param {string} cookieName - The name of the cookie to delete.
	* @description Deletes the indicated cookie.
	*/
	delete: function(cookieName) {
		if (cookieName) {
			Cookie.set(cookieName, "", -1);
		}
	},
	/**
	* @method get
	* @param {string} cookieName - The name of the cookie to retrieve
	* @returns {string}
	* @description Get the value stored in the cookie with the matching name, if any.
	*/
	get: function(cookieName) {
		if (cookieName) {
			var name = cookieName + "=";
			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);
				}
				if (c.indexOf(name) == 0) {
					return c.substring(name.length, c.length);
				}
			}
		}
		return "";
	},
	/**
	* @method set
	* @description Creates or overwrites the indicated cookie with the provided value, and optionally sets an expiration date.
	* @param {string} cookieName - The name of the cookie to set or overwrite
	* @param {string} cookieValue - The value to assign to the cookie
	* @param {number=} expirationDays - The time, in days, to store the cookie.
	*/
	set: function(cookieName, cookieValue, expirationDays) {
		if (cookieName) {
			var d = new Date();
			var expires = "";
			if (expirationDays) {
				d.setTime(d.getTime() + (expirationDays * 24 * 60 * 60 * 1000));
				expires = "expires=" + d.toUTCString();
			}
			document.cookie = cookieName + "=" + cookieValue + "; " + expires + "; path=/";
		}
	}
};

export default Cookie;