In this chapter, I’d like to paint the big picture: What are you learning in this book and how does it fit into the overall landscape of web development?
Node.js is important for web development in three ways:
To find out how to open the console in your web browser, you can do a web search for “console «name-of-your-browser»”. These are pages for some commonly used web browsers:
REPL stands for read-eval-print loop and basically means command line. To use it, you must first start Node.js from an operating system command line, via the command
node. Then an interaction with it looks as depicted in fig. 4: The text after
> is input from the user; everything else is output from Node.js.
Reading: REPL interactions
>) to mark input. For example:
> 3 + 5 8
Other options include: