js jquery 设置cookie

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