JavaScript Reserved Words and Keywords

The keywords below are used by JavaScript for particular purposes, and should not be used as the names of variables, functions, objects, properties, methods, or arrays:

 

Additional Reserved Words

The reserved words below may be used as keywords by JavaScript at a later date and should not be used as the names of variables, functions, objects, properties, methods, or arrays:

 

Additional Notes

If you run JavaScript code in strict mode, then the keywords arguments and eval will need to be added to the list of reserved words.

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