Template String As Object Property Name

by

Why are template strings not allowed as literal object keys?

Template strings are expressions, not literals1. You can only use string literals (and identifiers) for property names, for everything else – that is not known to be static – you need a computed property name.

Is it for performance reasons?

No, that’s unlikely. It’s to ease parsing, and makes it easy to distinguish constant (statically known) property names from dynamically computed ones.

And mostly, it’s a feature that no one needs. It doesn’t simplify or shorten anything, and what you would achieve with it is already possible.

Will the syntax be allowed sometime in the future?

Nope.

1: Even when they’re called “template literals”, technically they aren’t literals. And: templates don’t even need to be strings, they can evaluate to anything.

More Related Contents:

  1. What does this `…${…}…` code in the node docs mean? [duplicate]
  2. Backticks (`…`) calling a function in JavaScript
  3. ES6 template literals vs. concatenated strings
  4. How to use a variable for a key in a JavaScript object literal?
  5. “SyntaxError: Unexpected token < in JSON at position 0"
  6. Using Node.js require vs. ES6 import/export
  7. parseInt vs unary plus, when to use which?
  8. How to enable cors nodejs with express?
  9. JavaScript, Node.js: is Array.forEach asynchronous?
  10. Get local IP address in Node.js
  11. Nodemailer with Gmail and NodeJS
  12. How to use redis PUBLISH/SUBSCRIBE with nodejs to notify clients when data values change?
  13. Trying to use the DOMParser with node js
  14. node-request – Getting error “SSL23_GET_SERVER_HELLO:unknown protocol”
  15. Use a concatenated (dynamic) string as JavaScript object key? [duplicate]
  16. How do we or can we use node modules via npm with Meteor?
  17. ES6 immediately invoked arrow function
  18. UnhandledPromiseRejectionWarning: MongooseServerSelectionError
  19. puppeteer: how to wait until an element is visible?
  20. Accessing EJS variable in Javascript logic
  21. What is the right way to make a synchronous MongoDB query in Node.js?
  22. Why does Node.js’ fs.readFile() return a buffer instead of string?
  23. Using node.js’s File System functions from a browser
  24. Replace a string in a file with nodejs
  25. nodemon command is not recognized in terminal for node js server
  26. How to append to New Line in Node.js
  27. Babel 7 – ReferenceError: regeneratorRuntime is not defined
  28. Invalid shorthand property initializer [closed]
  29. Update all clients using Socket.io?
  30. node.js, express, how to get data from body form-data in post request

Leave a Comment