Server-side vs. Client-side Code

Ruby files (.rb)

Server-side. These files are the core of a Sinatra application. The code within them runs on the server while handling incoming requests.

Gemfile

Server-side. This file is used by Bundler, the Ruby dependency management system, to install libraries need to run the program.

_______ is data that persists over time.

State

JavaScript Files (.js)

Client-side. The code within these files is evaluated by the JavaScript interpreter within a web browser (a client) to add behavior to a web page. But what about the HTML tags within a view template? Aren't those client-side code? This is a common point of confusion, as these files contain both client-side code (HTML tags) and server-side code (Ruby). However, since they must be processed by a program on the server before being sent to the client, the ERB templates we've used in this course are considered to be server-side code.

Client-side.

Client-side. The code within these files is interpreted by the web browser (a client) as instructions for how to display a web page.