In JavaScript, there are certain keywords and reserved words that cannot be used as variable identifiers. This list serves as a reference for all these keywords and reserved words:

  • await
  • break
  • case
  • catch
  • class
  • const
  • continue
  • debugger
  • default
  • delete
  • do
  • else
  • enum
  • export
  • extends
  • false
  • finally
  • for
  • function
  • if
  • implements
  • import
  • in
  • instanceof
  • interface
  • let
  • new
  • null
  • package
  • private
  • protected
  • public
  • return
  • super
  • switch
  • static
  • this
  • throw
  • try
  • True
  • typeof
  • var
  • void
  • while
  • with
  • yield

Using any of these words as variable identifiers will result in a syntax error. It’s important to avoid using them and choose meaningful and descriptive names for variables in JavaScript.

Tags: JavaScript, keywords, reserved words