cookies box shells is provided 24 hours a popup

Step One: Download Library cookies

https://github.com/js-cookie/js-cookie

 

Step Two: Set expiration time of Cookies, there are two methods, and by the day calculated in hours

        function popup () { 
            the console.log ( "pop!" ); 
        } 
        
        // Get Cookies 
        var User = Cookies.get ( "User" );
         IF (! User) {
             // calculated daily expiration time of 1 day; 
//             Cookies.set ( 'User', '998', {expires:. 1});   
            
            // hourly, expiration time of 24 hours 
            var inFifteenMinutes = new new a Date ( new new . a Date () the getTime () + 24 * 60 60 * 1000 * ); 
            Cookies.set ( 'User', 'to true' , { 
                Expires: inFifteenMinutes 
            }); 
            
            // call the popup
            popup()
        }
        
        //删除Cookies
//        Cookies.remove("user");    

Note: If the time is not set cookies, cookies default expiration time is until you close your browser, cookies fail

 

Step 3: Check cookie in Google Chrome