Core JavaScript 1.5 Reference:Reserved Words

From MDC

The following are reserved words and may not be used as variables, functions, methods, or object identifiers. The following are reserved as existing keywords by the ECMAScript specification:

• break
• case
• catch
• continue
• default
• delete
• do
• else
• finally
• for
• function
• if
• in
• instanceof
• new
• return
• switch
• this
• throw
• try
• typeof
• var
• void
• while
• with

The following are reserved as future keywords by the ECMAScript specification:

• abstract
• boolean
• byte
• char
• class
• const
• debugger
• double
• enum
• export
• extends
• final
• float
• goto
• implements
• import
• int
• interface
• long
• native
• package
• private
• protected
• public
• short
• static
• super
• synchronized
• throws
• transient
• volatile

Take note that while not specified in ECMA-262, const, export, and import have been implemented in Mozilla.