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How do JavaScript-heavy web applications route freshly-entered data to a database, and then display it to the client, only using JavaScript/HTML?

Say Acme Social Network user types profile information into a HTML form and clicks 'submit':

  • How would you save that user's profile data to a database?
  • How would you then display that user's profile data on the profile page?

Can it all be done with JS/HTML?

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Well, you could use CouchDB as the backend, or use Node.js with a more traditional DB (or CouchDB), but most people still use a LAMP stack for the backend (often with a framework such as Dancer, Catalyst or Django).

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There's always a server-side programming language that interacts directly with the database and generates pages with that data. On a javascript heavy page, there might be an AJAX call that sends the data to a server-side script to store in the database. Information can be pulled from the server with AJAX requests as well. But there's always server-side code that the front end is interacting with.

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