1 function Cookie() {}; 2     Cookie.prototype = { 3         constructor: Cookie, 4         _path: "/", 5         expire: new Date(), 6         setPath: function(path) { 7             this._path = !path ? this._path : path; 8         }, 9         getPath: function() {10             return this._path;11         },12         set: function(name, value, day) {13             if (this.get(name)) this.del(name);14             day = day ? day : 0;15             this.expire.setTime(this.expire.getTime() + day * 24 * 3600 * 1000);16             document.cookie = name + "=" + escape(value) + (day != 0 ? ";expires=" + this.expire.toGMTString() : "") + ";path=" + this.getPath();17         },18         get: function(name) {19             var arr = document.cookie.match(new RegExp("(^| )" + name + "=([^;]*)(;|$)"));20             if (arr != null) {21                 return unescape(arr[2]);22             }23         },24         del: function(name) {25             if (this.get(name)) {26                 document.cookie = name + "=" + "; expires=Thu, 01-Jan-70 00:00:01 GMT;path=" + this.getPath();27             }28         },29         delAll: function() {30             var arr = document.cookie.match(/[^ =;]+(?=\=)/g);31             if (arr) {32                 for (var i = arr.length; i--;) {33                     this.del(arr[i]);34                 }35             }36         }37     };38     var cookie = new Cookie();39     cookie.set('flag', 'audit');