JavaScript is a dynamic, object-based language commonly used for client-side scripting in web browsers. Recently, server side JavaScript frameworks have also emerged. JavaScript runs on nearly every operating system and in almost every mainstream web browser.
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I just have one doubt about that.
When the customer do a login via Facebook using js, they authorize my app to get some information. When I launch php via ajax to collect the rest of user information, I have to authenticate again the user, or I can get the information directly?
~JC