繁體中文当前位置: 首页 > 图文教程 > 网络编程 > Javascript > 写入cookie的JavaScript代码库 cookieLibrary.js
- Javascript
- 11款基于Javascript的文件管理器
- 5款Javascript颜色选择器
- JavaScript 对话框和状态栏使用说明
- 状态栏 时间显示效果 数字钟
- 在图片上单击获取图片原始大小
- 禁止在图片上使用右键
- javascript 操作Word和Excel的实现代码
- 几个javascript操作word的参考代码
- innerhtml用法 innertext用法 以及innerHTML与innertext的区别
- 解决表单中第一个非隐藏的元素获得焦点的一个方案
- 解决jquery .ajax 在IE下卡死问题的解决方法
- javascript 实现划词标记划词搜索功能
- 用Greasemonkey 脚本收藏网站会员信息到本地
- javascript 关于# 和 void的区别分析
- DIV+CSS+JS 变灰弹出层
- Ajax+Json 级联菜单实现代码
- javascript 读取XML数据，在页面中展现、编辑、保存的实现
- html 锁定页面(js遮罩层弹出div效果)
- 基于jQuery的日期选择控件
- javascript获得CheckBoxList选中的数量
Javascript 中的 写入cookie的JavaScript代码库 cookieLibrary.js
出处:互联网 整理: 软晨网（RuanChen.com） 发布: 2010-01-10 浏览: 61 ::
收藏到网摘: n/a
cookieLibrary.js 写入cookie的JavaScript代码库,需要的朋友可以参考下。 /* Cookie Library -- "Night of the Living Cookie" Version (25-Jul-96)
2缔友计算机信息技术有限公司，涂聚文 [email protected] 互相交流
3 Written by: Bill Dortch, hIdaho Design <[email protected]>
4 The following functions are released to the public domain.
5http://www.dusystem.com/
6 This version takes a more aggressive approach to deleting
7 cookies. Previous versions set the expiration date to one
8 millisecond prior to the current time; however, this method
9 did not work in Netscape 2.02 (though it does in earlier and
later versions), resulting in "zombie" cookies that would not
die. DeleteCookie now sets the expiration date to the earliest
usable date (one second into 1970), and sets the cookie's value
to null for good measure.
Also, this version adds optional path and domain parameters to
the DeleteCookie function. If you specify a path and/or domain
when creating (setting) a cookie**, you must specify the same
path/domain when deleting it, or deletion will not occur.
The FixCookieDate function must now be called explicitly to
correct for the 2.x Mac date bug. This function should be
called *once* after a Date object is created and before it
is passed (as an expiration date) to SetCookie. Because the
Mac date bug affects all dates, not just those passed to
SetCookie, you might want to make it a habit to call
FixCookieDate any time you create a new Date object:
var theDate = new Date();
FixCookieDate (theDate);
Calling FixCookieDate has no effect on platforms other than
the Mac, so there is no need to determine the user's platform
prior to calling it.
This version also incorporates several minor coding improvements.
**Note that it is possible to set multiple cookies with the same
name but different (nested) paths. For example:
SetCookie ("color","red",null,"/outer");
SetCookie ("color","blue",null,"/outer/inner");
However, GetCookie cannot distinguish between these and will return
the first cookie that matches a given name. It is therefore
recommended that you *not* use the same name for cookies with
different paths. (Bear in mind that there is *always* a path
associated with a cookie; if you don't explicitly specify one,
the path of the setting document is used.)
Revision History:
"Toss Your Cookies" Version (22-Mar-96)
- Added FixCookieDate() function to correct for Mac date bug
"Second Helping" Version (21-Jan-96)
- Added path, domain and secure parameters to SetCookie
- Replaced home-rolled encode/decode functions with Netscape's
new (then) escape and unescape functions
"Free Cookies" Version (December 95)
For information on the significance of cookie parameters, and
and on cookies in general, please refer to the official cookie
spec, at:
http:www.netscape.com/newsref/std/cookie_spec.html
****************************************************************** */
/**//* "Internal" function to return the decoded value of a cookie */
复制代码 代码如下:
function getCookieVal (offset) {
var endstr = document.cookie.indexOf (";", offset);
if (endstr == -1) {
endstr = document.cookie.length;
}
return unescape(document.cookie.substring(offset, endstr));
}
/**//* Function to correct for 2.x Mac date bug. Call this function to
fix a date object prior to passing it to SetCookie.
IMPORTANT: This function should only be called *once* for
any given date object! See example at the end of this document. */
复制代码 代码如下:
function FixCookieDate (date) {
var base = new Date(0);
var skew = base.getTime(); // dawn of (Unix) time - should be 0
if (skew > 0) { // except on the Mac - ahead of its time
date.setTime(date.getTime() - skew);
}
}
/**//* Function to return the value of the cookie specified by "name".
name - String object containing the cookie name.
returns - String object containing the cookie value, or null if
the cookie does not exist. */
复制代码 代码如下:
function GetCookie (name) {
var temp = name + "=";
var tempLen = temp.length;
var cookieLen = document.cookie.length;
var i = 0;
while (i < cookieLen) {
var j = i + tempLen;
if (document.cookie.substring(i, j) == temp) {
return getCookieVal(j);
}
i = document.cookie.indexOf(" ", i) + 1;
if (i == 0) break;
}
return null;
}
/**//* Function to create or update a cookie.
name - String object containing the cookie name.
value - String object containing the cookie value. May contain
any valid string characters.
[expiresDate] - Date object containing the expiration data of the cookie. If
omitted or null, expires the cookie at the end of the current session.
[path] - String object indicating the path for which the cookie is valid.
If omitted or null, uses the path of the calling document.
[domain] - String object indicating the domain for which the cookie is
valid. If omitted or null, uses the domain of the calling document.
[secure] - Boolean (true/false) value indicating whether cookie transmission
requires a secure channel (HTTPS).
The first two parameters are required. The others, if supplied, must
be passed in the order listed above. To omit an unused optional field,
use null as a place holder. For example, to call SetCookie using name,
value and path, you would code:
SetCookie ("myCookieName", "myCookieValue", null, "/");
Note that trailing omitted parameters do not require a placeholder.
To set a secure cookie for path "/myPath", that expires after the
current session, you might code:
SetCookie (myCookieVar, cookieValueVar, null, "/myPath", null, true); */
复制代码 代码如下:
function SetCookie (name,value,expiresDate,path,domain,secure) {
document.cookie = name + "=" + escape (value) +
((expiresDate) ? "; expires=" + expiresDate.toGMTString() : "") +
((path) ? "; path=" + path : "") +
((domain) ? "; domain=" + domain : "") +
((secure) ? "; secure" : "");
}
/**//* Function to delete a cookie. (Sets expiration date to start of epoch)
name - String object containing the cookie name
path - String object containing the path of the cookie to delete. This MUST
be the same as the path used to create the cookie, or null/omitted if
no path was specified when creating the cookie.
domain - String object containing the domain of the cookie to delete. This MUST
be the same as the domain used to create the cookie, or null/omitted if
no domain was specified when creating the cookie. */
复制代码 代码如下:
function DeleteCookie (name,path,domain) {
if (GetCookie(name)) {
document.cookie = name + "=" +
((path) ? "; path=" + path : "") +
((domain) ? "; domain=" + domain : "") +
"; expires=Thu, 01-Jan-70 00:00:01 GMT";
}
}
// Calling examples:
// var expdate = new Date ();
// FixCookieDate (expdate); // Correct for Mac date bug - call only once for given Date object!
// expdate.setTime (expdate.getTime() + (24 * 60 * 60 * 1000)); // 24 hrs from now
// SetCookie ("ccpath", "http://www.dupcit.com/articles/", expdate);
// SetCookie ("ccname", "WebWoman", expdate);
// SetCookie ("tempvar", "This is a temporary cookie.");
// SetCookie ("ubiquitous", "This cookie will work anywhere in this domain",null,"/");
// SetCookie ("paranoid", "This cookie requires secure communications",expdate,"/",null,true);
// SetCookie ("goner", "This cookie must die!");
// document.write (document.cookie + "<br>");
// DeleteCookie ("goner");
// document.write (document.cookie + "<br>");
// document.write ("ccpath = " + GetCookie("ccpath") + "<br>");
// document.write ("ccname = " + GetCookie("ccname") + "<br>");
// document.write ("tempvar = " + GetCookie("tempvar") + "<br>");
评论 (0) All
