JS Read Write Delete Cookie

js-read-write-delete-cookie

var Utils = (function () {

	var utils = {

		getUrlParameterByName: function (name) {
			name = name.replace(/[\[]/, "\\[").replace(/[\]]/, "\\]");
			var regex = new RegExp("[\\?&]" + name + "=([^&#]*)"),
			    results = regex.exec(location.search);
			return results == null ? "" : decodeURIComponent(results[1].replace(/\+/g, " "));
		},

		createCookie: function (name, value, days) {
			if (days) {
				var date = new Date();
				date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
				var expires = "; expires=" + date.toGMTString();
			}
			else var expires = "";

			document.cookie = name + "=" + value + expires + "; path=/";
		},

		readCookie: function (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;
		},

		eraseCookie: function (name) {
			this.createCookie(name, "", -1);
		}
	}

	return utils;
}());