Reserved Words

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Previous: Arithmetic and Assignment Operators

Lesson 13: The final lesson, Reserved Words

List of Reserved Words:

In JavaScript, reserved words are a combination of keywords used for JavaScript and words that are reserved for use in future versions of JavaScript. You must be extremely careful not to use reserved words for the names of variables, functions, methods, or objects. The list of reserved words generally includes 59 different words, we also added a couple that the programmers are not sure about yet. The typical list of 59 reserved words is as follows.

List of Reserved Words: (in alphabetical order)
abstract boolean break byte case catch char class const continue debugger default delete do double	else enum export extends false final finally float for function goto if implements import in	instanceof int interface long native new null package private protected public return short static super	switch synchronized this throw throws transient true try typeof var void volatile while with

Then add to that, just to be safe: as, is, native and use as they may also be used in the next version of JavaScript (version 2.0).

Eventually you will learn exactly what all of these words do. You should recognize some of them already. Keep on coding and you will see most of them soon enough.

You should bookmark this page for reference as you will need to look at it until you get used to the list so you do not accidentally misuse one of these words.

This is the last lesson of the Beginner’s JavaScript Tutorial. Hopefully, our next JavaScript tutorial, the Intermediate JavaScript Tutorial, will be our next project. Best Regards and Happy Coding!