Javascript

Javascript Reserved Keywords

When writing code, a reserved keyword is one you can't use as the name of a variable or identifier. As of 2022, this is the full list of valid reserved keywords in Javascript.

All Javascript Reserved Keywords

The below list cannot be used as variable names, as they are reserved keywords. Most of them have current functionality in Javascript. Some do not, but they are words which may have some sort of functionality in the future. Avoid using these words in variable names.

• await
• break
• case
• catch
• class
• const
• continue
• debugger
• default
• delete
• do
• else
• enum
• export
• extends
• false
• finally
• for
• function
• if
• import
• in
• instanceof
• new
• null
• return
• super
• switch
• this
• throw
• true
• try
• typeof
• var
• void
• while
• with
• yield

More Tips and Tricks for Javascript

• Javascript Functions
• Art Generator with Javascript and WebGL
• The Complete Guide to JavaScript Set Type
• How Promises and Await work in Javascript
• How the Javascript History API Works
• What are the three dots (...) or spread operator in Javascript?
• Javascript on Click Confetti Effect
• How to Auto Generate Images with Node.JS and Canvas
• A Look at the New Array Methods coming to Javascript
• An Introduction to Javascript Objects