在jQuery mobile中保存app状态

Question

I have done a bit of research on how to do this but can't find any.I have an app that has a Home page.On this homepage, there is a Register button.I want to implement a system where if the user clicks on this and registers, the app never starts with the Register button displayed again,but rather, a view Profile button.How do i implement such a system? My guess is to store some boolean value in localstorage, and check this value when the app starts?

Update: I just thought i'd add that my jquery mobile app communicates with a Google App Engine (Python) web service which already uses Google's User's Service

Answer 1

I believe you are looking for Local Storage Jquery Mobile .

You have to store data when user click on Register button, and every time when app will open it checks is there is any data in Local Storage . Then you can use your logic.

You can also use HTML5 Local Storage with Jquery Mobile . But some device browser dose not support Local storage if you want to check this you should go for Modernizer .

This is simple code of checking local storage using modernizer:

if (Modernizr.localstorage) {
    // Supported
}
else {
    // Not Supported
}

Answer 2

If you only store a boolean after the user is logged-in, yes you know that a user is logged in but you don't know which one.

Te best approach is to store the user's token which you will send as a parameter in all requests so that you can validate them.

When entering the website if there is a token you must validate it by querying the server. If it's not valid then you show the register/login page. If the token is valid you could login the user automatically.

Whatever plugin you decide to use be sure to check that if it is a localStorage plugin it also has fallback for cookies. (Maybe some clients will have browsers that don't support localStorage)

On this page there are 3 functions that I personally use when I need access to cookies.

Here you have some details about token authentication.

I would advise you to store the token using cookies.

This answer describes one of the best ways of managing user sessions based on tokens.