cookie.js

初学者

/*
	Copyright (c) 2004-2006, The Dojo Foundation
	All Rights Reserved.

	Licensed under the Academic Free License version 2.1 or above OR the
	modified BSD license. For more information on Dojo licensing, see:

		http://dojotoolkit.org/community/licensing.shtml
*/



dojo.provide("dojo.io.cookie");
dojo.io.cookie.setCookie = function (name, value, days, path, domain, secure) {
	var expires = -1;
	if ((typeof days == "number") && (days >= 0)) {
		var d = new Date();
		d.setTime(d.getTime() + (days * 24 * 60 * 60 * 1000));
		expires = d.toGMTString();
	}
	value = escape(value);
	document.cookie = name + "=" + value + ";" + (expires != -1 ? " expires=" + expires + ";" : "") + (path ? "path=" + path : "") + (domain ? "; domain=" + domain : "") + (secure ? "; secure" : "");
};
dojo.io.cookie.set = dojo.io.cookie.setCookie;
dojo.io.cookie.getCookie = function (name) {
	var idx = document.cookie.lastIndexOf(name + "=");
	if (idx == -1) {
		return null;
	}
	var value = document.cookie.substring(idx + name.length + 1);
	var end = value.indexOf(";");
	if (end == -1) {
		end = value.length;
	}
	value = value.substring(0, end);
	value = unescape(value);
	return value;
};
dojo.io.cookie.get = dojo.io.cookie.getCookie;
dojo.io.cookie.deleteCookie = function (name) {
	dojo.io.cookie.setCookie(name, "-", 0);
};
dojo.io.cookie.setObjectCookie = function (name, obj, days, path, domain, secure, clearCurrent) {
	if (arguments.length == 5) {
		clearCurrent = domain;
		domain = null;
		secure = null;
	}
	var pairs = [], cookie, value = "";
	if (!clearCurrent) {
		cookie = dojo.io.cookie.getObjectCookie(name);
	}
	if (days >= 0) {
		if (!cookie) {
			cookie = {};
		}
		for (var prop in obj) {
			if (obj[prop] == null) {
				delete cookie[prop];
			} else {
				if ((typeof obj[prop] == "string") || (typeof obj[prop] == "number")) {
					cookie[prop] = obj[prop];
				}
			}
		}
		prop = null;
		for (var prop in cookie) {
			pairs.push(escape(prop) + "=" + escape(cookie[prop]));
		}
		value = pairs.join("&");
	}
	dojo.io.cookie.setCookie(name, value, days, path, domain, secure);
};
dojo.io.cookie.getObjectCookie = function (name) {
	var values = null, cookie = dojo.io.cookie.getCookie(name);
	if (cookie) {
		values = {};
		var pairs = cookie.split("&");
		for (var i = 0; i < pairs.length; i++) {
			var pair = pairs[i].split("=");
			var value = pair[1];
			if (isNaN(value)) {
				value = unescape(pair[1]);
			}
			values[unescape(pair[0])] = value;
		}
	}
	return values;
};
dojo.io.cookie.isSupported = function () {
	if (typeof navigator.cookieEnabled != "boolean") {
		dojo.io.cookie.setCookie("__TestingYourBrowserForCookieSupport__", "CookiesAllowed", 90, null);
		var cookieVal = dojo.io.cookie.getCookie("__TestingYourBrowserForCookieSupport__");
		navigator.cookieEnabled = (cookieVal == "CookiesAllowed");
		if (navigator.cookieEnabled) {
			this.deleteCookie("__TestingYourBrowserForCookieSupport__");
		}
	}
	return navigator.cookieEnabled;
};
if (!dojo.io.cookies) {
	dojo.io.cookies = dojo.io.cookie;
}