Does node.js support the ‘let’ statement?

by

Yes, you can use let within node.js, however you have to run node using the optional –harmony flag. Try the following test.js:

"use strict"
var x = 8,
    y = 12;

{ let x = 5, y = 10; console.log(x + y); }

console.log(x + y);

And then run the file node --harmony test.js which results in:

15
20

I would not recommend using this in an important production application, but the functionality is available now.

More Related Contents:

  1. How do I pass command line arguments to a Node.js program?
  2. Is it bad practice to have a constructor function return a Promise?
  3. module.exports vs exports in Node.js
  4. How to parse JSON using Node.js? [closed]
  5. Best way to call an asynchronous function within map?
  6. How to avoid long nesting of asynchronous functions in Node.js
  7. Understanding Asynchronous Code in Layman’s terms
  8. Node.js can’t create Blobs?
  9. How can i export socket.io into other modules in nodejs?
  10. Is there a template engine for Node.js? [closed]
  11. TypeError: firebase.storage is not a function
  12. Module not found: Error: Can’t resolve ‘crypto’
  13. How do I upload a base64 encoded image (string) directly to a Google Cloud Storage bucket using Node.js?
  14. Inserting and Querying Date with MongoDB and Nodejs
  15. Socket.io + PhoneGap
  16. How many concurrent setTimeouts before performance issues?
  17. Eslint does not allow static class properties
  18. Environment detection: node.js or browser
  19. In the `import` syntax of ES6, how is a module evaluated exactly?
  20. Vue js error: Component template should contain exactly one root element
  21. setPresence activity type in discord.js v14 can only be set to “PLAYING”
  22. Discord.js – Cooldown for a command for each user not all users
  23. Checking if a message was sent from a DM not working
  24. Upload Base64 Image Facebook Graph API
  25. Discord.js: Invalid bitfield flag or number: GUILDS
  26. create-react-app: How do I “npm start” with a specific browser?
  27. Spawn and kill a process in node.js
  28. Module build failed (from ./node_modules/babel-loader/lib/index.js): Error: Cannot find module ‘babel-preset-react’
  29. Recursive Promises Not Returning
  30. Node JS fs module inside browser

Leave a Comment