/*
* クッキー操作 JavaScript
*
*
* Copyright (c) 2003 DRECOM CO.,LTD. All rights reserved.
*
* info@drecom.co.jp
* http://www.drecom.co.jp/
*/
/**
* Cookieの値設定
*/
function setCookie(name,value,expire){
document.cookie
= name + '=' + EscapeSJIS(value)
+ ((expire==null)?'; path=/; expires=Thu, 1-Jan-2030 00:00:00 GMT':('; expires='+expire.toGMTString()));
}
/**
* Cookie 取得関数
*/
function getCookie(name){
var search = name + '=';
if (document.cookie.length>0) {
offset = document.cookie.indexOf(search);
if (offset != -1){
offset += search.length;
end = document.cookie.indexOf(';',offset);
if(end == -1)
end = document.cookie.length;
return UnescapeAutoDetect(document.cookie.substring(offset,end));
}
}
return null;
}
/**
* Cookie 制御オブジェクト
*
* @param aDocument クッキーを格納する document オブジェクト（必須）
* @param aName クッキーの名前（必須）
* @param hours 有効期限。単位は時間。
* @param path path
* @param domain domain
* @param secure secure
*
* @author David Flanagan
* @author http://examples.oreilly.com/jscript3/text/18-1.txt
*/
function Cookie(aDocument, aName, hours, path, domain, secure)
{
// 2004-04-20 Takanori Ishikawa
// ------------------------------------------------------------------------
// cookie に保存するプロパティと区別するため、
// Cookie オブジェクトのプロパティには prefix として '$' をつける
this.$document = aDocument;
this.$name = aName;
this.$expiration = hours ? new Date((new Date()).getTime() + hours*3600000) : null;
this.$path = path ? path : null;
this.$domain = domain ? domain : null;
this.$secure = secure ? secure : false;
}
/**
* クッキーを保存
*/
Cookie.prototype.store = function()
{
// First, loop through the properties of the Cookie object and
// put together the value of the cookie. Since cookies use the
// equals sign and semicolons as separators, we'll use colons
// and ampersands for the individual state variables we store
// within a single cookie value. Note that we escape the value
// of each state variable, in case it contains punctuation or other
// illegal characters.
var cookieval = "";
for(var prop in this) {
// Ignore properties with names that begin with '$' and also methods.
if ((prop.charAt(0) == '$') || ((typeof this[prop]) == 'function'))
continue;
if (cookieval != "") cookieval += '&';
cookieval += prop + ':' + EscapeSJIS(this[prop]);
}
// Now that we have the value of the cookie, put together the
// complete cookie string, which includes the name and the various
// attributes specified when the Cookie object was created.
var cookie = this.$name + '=' + cookieval;
if (this.$expiration)
cookie += '; expires=' + this.$expiration.toGMTString();
if (this.$path) cookie += '; path=' + this.$path;
if (this.$domain) cookie += '; domain=' + this.$domain;
if (this.$secure) cookie += '; secure';
// Now store the cookie by setting the magic Document.cookie property.
this.$document.cookie = cookie;
}
/**
* クッキーを読み込む
*/
Cookie.prototype.load = function()
{
// First, get a list of all cookies that pertain to this document.
// We do this by reading the magic Document.cookie property.
var allcookies = this.$document.cookie;
if (allcookies == "") return false;
// Now extract just the named cookie from that list.
var start = allcookies.indexOf(this.$name + '=');
if (start == -1) return false; // Cookie not defined for this page.
start += this.$name.length + 1; // Skip name and equals sign.
var end = allcookies.indexOf(';', start);
if (end == -1) end = allcookies.length;
var cookieval = allcookies.substring(start, end);
// Now that we've extracted the value of the named cookie, we've
// got to break that value down into individual state variable
// names and values. The name/value pairs are separated from each
// other by ampersands, and the individual names and values are
// separated from each other by colons. We use the split method
// to parse everything.
var a = cookieval.split('&'); // Break it into array of name/value pairs.
for(var i=0; i < a.length; i++){ // Break each pair into an array.
a[i] = a[i].split(':');
}
// Now that we've parsed the cookie value, set all the names and values
// of the state variables in this Cookie object. Note that we unescape()
// the property value, because we called escape() when we stored it.
for(var i = 0; i < a.length; i++) {
this[a[i][0]] = UnescapeAutoDetect(a[i][1]);
}
// We're done, so return the success code.
return true;
}
/**
* クッキーを取り除く
*/
Cookie.prototype.remove = function()
{
var cookie;
cookie = this.$name + '=';
if (this.$path) cookie += '; path=' + this.$path;
if (this.$domain) cookie += '; domain=' + this.$domain;
cookie += '; expires=Fri, 02-Jan-1970 00:00:00 GMT';
this.$document.cookie = cookie;
}
Cookie.prototype.toString = function()
{
var cookieval = "";
for(var prop in this) {
// Ignore properties with names that begin with '$' and also methods.
if ((prop.charAt(0) == '$') || ((typeof this[prop]) == 'function'))
continue;
cookieval += prop + ':' + (this[prop]) + "\n";
}
return cookieval;
}
/**
//===================================================================
// The code above is the definition of the Cookie class.
// The code below is a sample use of that class.
//===================================================================
// Create the cookie we'll use to save state for this web page.
// Since we're using the default path, this cookie will be accessible
// to all web pages in the same directory as this file or "below" it.
// Therefore, it should have a name that is unique among those pages.
// Note that we set the expiration to 10 days in the future.
var visitordata = new Cookie(document, "name_color_count_state", 240);
// First, try to read data stored in the cookie. If the cookie is not
// defined, or if it doesn't contain the data we need, then query the
// user for that data.
if (!visitordata.load() || !visitordata.name || !visitordata.color) {
visitordata.name = prompt("What is your name:", "");
visitordata.color = prompt("What is your favorite color:", "");
}
// Keep track of how many times this user has visited the page:
if (visitordata.visits == null) visitordata.visits = 0;
visitordata.visits++;
// Store the cookie values, even if they were already stored, so that the
// expiration date will be reset to 10 days from this most recent visit.
// Also, store them again to save the updated visits state variable.
visitordata.store();
// Now we can use the state variables we read:
document.write('' +
'Welcome, ' + visitordata.name + '!' +
'' +
'You have visited ' + visitordata.visits + ' times.');
*/