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JavaScript Reserved Words

Last updated: September 9th, 2004

The following are reserved words in JavaScript. They cannot be used as JavaScript variables, functions, methods, loop labels, or object names.

Reserved Words

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

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