- 保留字
break
delete
function
return
typeof
case
do
if
switch
var
catch
else
in
this
void
continue
false
instanceof
throw
while
debugger
finally
new
true
with
default
for
null
try
为将来保留的字
abstract
double
goto
native
static
boolean
enum
implements
package
super
byte
export
import
private
synchronized
char
extends
int
protected
throws
class
final
interface
public
transient
const
float
long
short
volatile