JQuery设置cookie|JQuery删除cookie|JQuery获取cookie 过期
简单使用方法：
- <html>
- <head>
- <title>JQuery-Cookie插件</title>
- <scripttype="text/javascript"src="jquery-1.4.js"></script>
- <scripttype="text/javascript"src="jquery.cookie.js"></script>
- </head>
- <body>
- <ahref="#">设置cookie1</a><br>
- <ahref="#">设置cookie2</a><br>
- <ahref="#">获取cookie</a><br>
- <ahref="#">删除cookie</a><br>
- </body>
- </html>
- <scripttype="text/javascript">
- $(function(){
- var COOKIE_NAME = 'test_cookie';
- //设置cookie，通过时间间隔
- $('a').eq(0).click(function() {
- $.cookie(COOKIE_NAME, 'test', { path: '/', expires: 1 });
- return false;
- });
- // 设置cookie，到期时间
- $('a').eq(1).click(function() {
- var date = new Date();
- date.setTime(date.getTime() + (1 * 24 * 60 * 60 * 1000));
- $.cookie(COOKIE_NAME, 'test', { path: '/', expires: date });
- return false;
- });
- // 获取 cookie
- $('a').eq(2).click(function() {
- alert($.cookie(COOKIE_NAME));
- return false;
- });
- // 删除cookie
- $('a').eq(3).click(function() {
- $.cookie(COOKIE_NAME, null, { path: '/' });
- return false;
- });
- });
- </script>
插件的源代码也很简单：
- jQuery.cookie = function(name, value, options) {
- if (typeof value != 'undefined') { // name and value given, set cookie
- options = options || {};
- if (value === null) {
- value = '';
- options.expires = -1;
- }
- var expires = '';
- if (options.expires && (typeof options.expires == 'number' || options.expires.toUTCString)) {
- var date;
- if (typeof options.expires == 'number') {
- date = new Date();
- date.setTime(date.getTime() + (options.expires * 24 * 60 * 60 * 1000));
- } else {
- date = options.expires;
- }
- expires = '; expires=' + date.toUTCString();
- }
- var path = options.path ? '; path=' + (options.path) : '';
- var domain = options.domain ? '; domain=' + (options.domain) : '';
- var secure = options.secure ? '; secure' : '';
- document.cookie = [name, '=', encodeURIComponent(value), expires, path, domain, secure].join('');
- } else {
- var cookieValue = null;
- if (document.cookie && document.cookie != '') {
- var cookies = document.cookie.split(';');
- for (var i = 0; i < cookies.length; i++) {
- var cookie = jQuery.trim(cookies[i]);
- if (cookie.substring(0, name.length + 1) == (name + '=')) {
- cookieValue = decodeURIComponent(cookie.substring(name.length + 1));
- break;
- }
- }
- }
- return cookieValue;
- }
- };
jQuery.cookie = function(name, value, options) {
if (typeof value != 'undefined') { // name and value given, set cookie
options = options || {};
if (value === null) {
value = '';
options = $.extend({}, options); // clone object since it's unexpected behavior if the expired property were changed
options.expires = -1;
}
var expires = '';
if (options.expires && (typeof options.expires == 'number' || options.expires.toUTCString)) {
var date;
if (typeof options.expires == 'number') {
date = new Date();
date.setTime(date.getTime() + (options.expires * 24 * 60 * 60 * 1000));
} else {
date = options.expires;
}
expires = '; expires=' + date.toUTCString(); // use expires attribute, max-age is not supported by IE
}
// NOTE Needed to parenthesize options.path and options.domain
// in the following expressions, otherwise they evaluate to undefined
// in the packed version for some reason...
var path = options.path ? '; path=' + (options.path) : '';
var domain = options.domain ? '; domain=' + (options.domain) : '';
var secure = options.secure ? '; secure' : '';
document.cookie = [name, '=', encodeURIComponent(value), expires, path, domain, secure].join('');
} else { // only name given, get cookie
var cookieValue = null;
if (document.cookie && document.cookie != '') {
var cookies = document.cookie.split(';');
for (var i = 0; i < cookies.length; i++) {
var cookie = jQuery.trim(cookies[i]);
// Does this cookie string begin with the name we want?
if (cookie.substring(0, name.length + 1) == (name + '=')) {
cookieValue = decodeURIComponent(cookie.substring(name.length + 1));
break;
}
}
}
return cookieValue;
}
};
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta http-equiv="Content-Style-Type" content="text/css">
<meta http-equiv="Content-Script-Type" content="text/javascript">
<title>jQuery Cookie Plugin</title>
<script src="http://www.cnblogs.com/scripts/jquery-1.3.1.js" type="text/javascript"></script>
<script src="http://www.cnblogs.com/scripts/jquery.cookie.js" type="text/javascript"></script>
<script type="text/javascript">
$(function() {
var COOKIE_NAME = 'test_cookie';
var ADDITIONAL_COOKIE_NAME = 'additional';
$('a').eq(0).click(function() { // 用天数设置 cookie
$.cookie(COOKIE_NAME, 'test', { path: '/', expires: 10 });
return false;
});
$('a').eq(1).click(function() { // 用日期设置 cookie
var date = new Date();
date.setTime(date.getTime() + (3 * 24 * 60 * 60 * 1000));
$.cookie(COOKIE_NAME, 'test', { path: '/', expires: date });
return false;
});
$('a').eq(2).click(function() { // 获取 cookie
alert($.cookie(COOKIE_NAME));
return false;
});
$('a').eq(3).click(function() { // 删除 cookie
$.cookie(COOKIE_NAME, null, { path: '/' });
return false;
});
$('a').eq(4).click(function() { // 设置第二个 cookie
$.cookie(ADDITIONAL_COOKIE_NAME, 'foo', { expires: 10 });
return false;
});
$('a').eq(5).click(function() { // 获取第二个 cookie
alert($.cookie(ADDITIONAL_COOKIE_NAME));
return false;
});
$('a').eq(6).click(function() { // 删除第二个 cookie
$.cookie(ADDITIONAL_COOKIE_NAME, null);
return false;
});
});
</script>
</head>
<body>
<p>
<a href="#">设置 cookie (设置有效期天数为 10 天)</a><br>
<a href="#">设置 cookie (通过 date 对象设置过期日期为 3 天后的那天)</a><br>
<a href="#">获取 cookie</a><br>
<a href="#">删除 cookie</a><br>
<a href="#">设置另一个 cookie</a><br>
<a href="#">获取另一个 cookie</a><br>
<a href="#">删除另一个 cookie</a>
</p>
</body>
</html>
