REPL

The Read-Evaluate-Print-Loop (REPL) is the interactive Node.js shell.

It is a simple JavaScript editor.

Opening Shell

c:\work\nodejs\play>node

Shell

We are now in the REPL shell.

Do some js!

> 5 + 5
10
> 'Hello' + ' ' + 'World'
'Hello World'

Variables

Variables are allowed

> const array = [5, 2, 3, 1, 4]
> array.sort()
[ 1, 2, 3, 4, 5 ]

Introduction To Node.js (Chapter 402 - -REPL)

< REPL