February 2016
Beginner
348 pages
8h 40m
English
Content preview from Learning JavaScript, 3rd Edition
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Appendix C. Reserved Words
The following words can’t be used as an identifier (the name of a variable, constant, property, or function) in JavaScript:
-
await(reserved for future use) -
break -
case -
class -
catch -
const -
continue -
debugger -
default -
delete -
do -
else -
enum(reserved for future use) -
export -
extends -
false(literal value) -
finally -
for -
function -
if -
implements(reserved for future use) -
import -
in -
instanceof -
interface(reserved for future use) -
let -
new -
null(literal value) -
package(reserved for future use) -
private(reserved for future use) -
protectd(reserved for future use) -
public(reserved for future use) -
return -
super -
static(reserved for future use) -
switch -
this -
throw -
true(literal value) -
try -
typeof -
var -
void -
while -
with -
yield
The following words were reserved in ECMAScript specifications 1–3. They are no longer reserved words, but I discourage their use, as JavaScript implementations may (incorrectly) consider them reserved words:
-
abstract -
boolean -
byte -
char -
double -
final -
float -
goto -
int -
long -
native -
short -
synchronized -
transient -
volatile
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