设置js cookie过期(相当于清除浏览器对应名称的cookie)

 function ClearCookie() {
                var expires = new Date();
                expires.setTime(expires.getTime() - 1000);     //当前时间减去一秒,相当于立即过期(可以增减)
                document.cookie = "appCode='222''';path=/;expires=" + expires.toGMTString() + "";        //expires是对应过期时间的设置,不设这个值,cookie默认在关闭浏览器时失效
                document.cookie = "roleID='333''';path=/;expires=" + expires.toGMTString() + "";
                document.cookie = "parentMenuID='000''';path=/;expires=" + expires.toGMTString() + "";
                document.cookie = "currentMenuName='哈哈''';path=/;expires=" + expires.toGMTString() + "";

            }

path=/;表示cookie存放的位置是浏览器根目录

上述方法导致appCode,roleID,parentMenuID,currentMenuName4个cookie失效