转自http://yaoqianglilan.blog.163.com/blog/static/70978316201091810435251/
本人亲测setcookie() getcookie()非常好用，其它待测试
1.js设置cookie
//set cookie
function setcookie(name,value){
var Days = 30;
var exp = new Date();
exp.setTime(exp.getTime() + Days*24*60*60*1000);
document.cookie = name + "="+ escape (value) + ";expires=" + exp.toGMTString();
}
function getcookie(name){
var arr = document.cookie.match(new RegExp("(^| )"+name+"=([^;]*)(;|$)"));
if(arr != null){
return unescape(arr[2]);
}else{
return "";
}
}
function delcookie(name){
var exp = new Date();
exp.setTime(exp.getTime() - 1);
var cval=getCookie(name);
if(cval!=null) document.cookie= name + "="+cval+";expires="+exp.toGMTString();
}
//delcookie("GD-cms");
if (document.cookie != "") {
setcookie("GD-cms", "gae-django-cms");
}
alert(getcookie("GD-cms"));
2.jquery设置cookie 是封装到一个方法里面的 直接调用 跟php 差不多 取 设置 或者 删除
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;
}
};
使用方法
jQuery操作cookie的插件,大概的使用方法如下
$.cookie('the_cookie'); //读取Cookie值
$.cookie('the_cookie', 'the_value'); //设置cookie的值
$.cookie('the_cookie', 'the_value', {expires: 7, path: '/', domain: 'jquery.com', secure: true});//新建一个cookie 包括有效期 路径 域名等
$.cookie('the_cookie', 'the_value'); //新建cookie
$.cookie('the_cookie', null); //删除一个cookie
设置一个名称为blog，值为css9.net的cookie:
$.cookie("blog", "css9.net");
设置一个名称为blog，值为css9.net的cookie，同时设置过期时间（expires属性）为7天：
$.cookie("blog", "css9.net", { expires: 7 });
设置一个名称为blog，值为css9.net的cookie，设置过期时间（expires属性）为7天，同时设置cookie的path属性为”/admin”
$.cookie("blog", "css9.net", { path: '/admin', expires: 7 });
读取Cookie：
读取名称为blog的cookie值：
alert( $.cookie("blog") );
删除cookie：
$.cookie("example", null);
如果你使用了jquery插件 建议 用jquery自带的 如果 没有 就不必为了设置cookie 引入jquery了 毕竟 插件加载还是比较大的
