cookies丢失问题

龙火 2012-11-19 11:05:34

<script type="text/javascript">

    $(document).ready(function () {    

        $("#username").val($.cookie('cookiesName'));

        $("#password").val($.cookie('cookiesPwd'));

        $("#btnLogin").click(function () {



            if ($("#username").val() == "") {

                alert("用户名不能为空！");

                return;

            }

            if ($("#password").val() == "") {

                alert("密码不能为空！");

                return;

            }

            $.cookie('cookiesName', $("#username").val(), { expires: $("#Select1 option:selected").val() });

            $.cookie('cookiesPwd', $("#password").val(), { expires: $("#Select1 option:selected").val() });



           

        });

    })

</script>

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(); // use expires attribute, max-age is not supported by IE  

            }  

            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;  

        }  

    };  

    function getcookie(name) {  

    var cookie_start = document.cookie.indexOf(name);  

    var cookie_end = document.cookie.indexOf(";", cookie_start);  

    return cookie_start == -1 ? '' : unescape(document.cookie.substring(cookie_start + name.length + 1, (cookie_end > cookie_start ? cookie_end : document.cookie.length)));  

    }  

    function setcookie(cookieName, cookieValue, seconds, path, domain, secure) {  

        var expires = new Date();  

        expires.setTime(expires.getTime() + seconds);  

        document.cookie = escape(cookieName) + '=' + escape(cookieValue)  

                                                + (expires ? '; expires=' + expires.toGMTString() : '')  

                                                + (path ? '; path=' + path : '/')  

                                                + (domain ? '; domain=' + domain : '')  

                                                + (secure ? '; secure' : '');  

    }