Node.js REPL (Read, Evaluate, Print, Loop) is an interactive shell that processes Node.js expressions. The environment reads JavaScript code the user enters, evaluates the result of interpreting the line of code, prints the result to the user, and loops until the user signals to quit.
The REPL shell allows quick testing of JavaScript/Node.js snippets to check their behavior. It can be accessed by simply typing ‘node’ in the command prompt (Terminal for Mac users) without any file arguments.
