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Exploring REPL Terminal

Posted By : Shailendra Chauhan, 31 Dec 2015
Total Views : 687   
 

REPL stands for Read-Eval-Print-Loop. It is an interface to run your JavaScript code and see the results. You can access REPL by simply runningNode.js command prompt and simply run command node.

Here, we are adding two numbers 1 and 2 which results into 3.

REPL Commands

Command
Description
.help
It shows REPL options and commands.
.break
It helps you to exit from multiline expression when you get stuck.
.clear
It is an alias for .break.
.exit
Exit the REPL
.load
It will help you to load JS code form a file into the REPL session.
.save
It will save all evaluated command in the REPL session.

REPL Shortcuts

Shortcut
Description
Ctl + d
It will terminate the REPL session.
Up/Down Keys
It will iterate through command history.
Tab
It will display the list of current available commands.
What do you think?

I hope you will enjoy commands and short-cuts while programming with Node.js. I would like to have feedback from my blog readers. Your valuable feedback, question, or comments about this article are always welcome.

 
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About the Author
Shailendra Chauhan

Shailendra Chauhan is an Entrepreneur, Author, Architect, and Corporate Trainer. He has rewarded as Microsoft MVP for his exceptional contributions in Microsoft Visual Studio and Development Technologies.

With more than 7 years in hand experience Shailendra Chauhan is a polymath in the domains of Microsoft .NET technologies and an array of other technologies including JavaScript, AngularJS, Node.js, Ionic and NoSQL Databases to name but a few.

He is the author of some of most popular e-books which encompass technical Interview on Node.js Interview Questions and Answers , ASP.NET MVC Interview Questions and Answers , AngularJS Interview Questions and Answers and LINQ Interview Questions and Answers. Furthermore he is a technical reviewer for book on ASP.NET MVC 4 Mobile App Development. Know more...
 
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