Appendix C. ECMAScript Reserved Keywords
All of the words in the following table are reserved for use by the ECMAScript interpreter built into scriptable browsers. You may not use these words as identifiers for variables, functions, or objects. A majority of these words are already used by current implementations of JavaScript, while others may become part of the vocabulary in future versions:
abstract |
boolean |
break |
byte |
case |
catch |
char |
class |
const |
continue |
debugger |
default |
delete |
do |
double |
else |
enum |
export |
extends |
final |
finally |
float |
for |
function |
goto |
if |
implements |
import |
in |
instanceof |
int |
interface |
long |
native |
new |
package |
private |
protected |
public |
return |
short |
static |
super |
switch |
synchronized |
this |
throw |
throws |
transient |
try |
typeof |
var |
void |
volatile |
while |
with |
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