JavaScript | Reserved Words
In JavaScript, you cannot use these reserved words as variable names, label names, or function names.
Reserved Words:
abstract |
arguments |
boolean |
break |
byte |
case |
catch |
char |
const |
continue |
debugger |
default |
delete |
do |
double |
else |
eval |
false |
final |
finally |
float |
for |
function |
goto |
if |
implements |
in |
instanceof |
int |
interface |
long |
native |
new |
null |
package |
private |
protected |
public |
return |
short |
static |
switch |
synchronized |
this |
throw |
throws |
transient |
true |
try |
typeof |
var |
void |
volatile |
while |
with |
yield |
|
|
|
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Reserved Words added in ECMAScript 5 and 6:
awaits |
class |
enum |
export |
extends |
import |
let |
super |
Removed Reserved Words: The following reserved words have been removed from ECMAScript 5 and 6.
abstract |
boolean |
byte |
char |
double |
final |
float |
goto |
int |
long |
native |
short |
synchronized |
throws |
transient |
volatile |
Other Reserved Words: JavaScript can be used as the programming language in many applications.
alert |
all |
anchor |
area |
anchors |
assign |
blur |
button |
checkbox |
clearInterval |
clearTimeout |
clientInformation |
close |
closed |
confirm |
constructor |
crypto |
decodeURI |
decodeURIComponent |
defaultStatus |
document |
element |
elements |
embed |
embeds |
encodeURI |
encodeURIComponent |
escape |
event |
fileUpload |
focus |
form |
forms |
frame |
innerHeight |
innerWidth |
layer |
link |
location |
mimeTypes |
navigate |
navigator |
frames |
frameRate |
hidden |
history |
image |
images |
offscreenBuffering |
open |
opener |
option |
outerWidth |
outerHeight |
packages |
pageXOffset |
pageYOffset |
parent |
parseFloat |
parseInt |
password |
pkcs11 |
plugin |
prompt |
propertyIsEnum |
radio |
reset |
screenX |
screenY |
scroll |
secure |
select |
self |
setInterval |
setTimeout |
status |
submit |
taint |
text |
textarea |
HTML Event Handlers: The name of all HTML event handlers should not be used in javascript
onblur |
onclick |
onerror |
onfocus |
onkeydown |
onkeypress |
onkeyup |
onmouseover |
onload |
onmouseup |
onmousedown |
onsubmit |
Last Updated :
24 Mar, 2023
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