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jQuery 操作Cookie 的函数

Posted on 2009-04-23 22:15  linFen  阅读(5250)  评论(0编辑  收藏  举报
jQuery.cookie = function(name, value, options) {
          if (typeof value != 'undefined') {
                    options = options || {};
                    if (value === null) {
                              value = '';
                              options = $.extend({}, options);
                              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;
          }
};


调用方法!
$(document).ready(function() {
$('#wCookies').click(function(){
     $.cookie('name', 'test',{expires: 7});                         
});
$('#rCookies').click(function(){
     var test = $.cookie('name');
     alert (test);
});
$('#dCookies').click(function(){
     $.cookie('name', null);                                        
});
});