식 및 연산자

이 장은 JavaScript의 모든 연산자operator, 식expression 및 키워드를 나열합니다.

항목별 식 및 연산자

알파벳순 목록은 왼쪽 사이드바를 보세요.

기본 식

기본 키워드 및 JavaScript의 일반 식.

this
this 키워드는 실행 문맥의 특별한 속성을 가리킵니다.
function
function 키워드는 함수를 정의합니다.
class
class 키워드는 클래스를 정의합니다.
function*
function* 키워드는 생성기generator 함수 식을 정의합니다.
yield
생성기 함수를 일시정지 및 재개합니다.
yield*
다른 생성기 함수 또는 순회가능 객체로 위임합니다.
async function
async function은 비동기 함수 표현식을 정의합니다.
await
비동기 함수를 일시 중지했다가 다시 시작하고 promise의 resolution/rejection을 ​​기다립니다.
[]
배열 초기자 및 리터럴 구문.
{}
객체 초기자 및 리터럴 구문.
/ab+c/i
정규식 리터럴 구문.
( )
그룹 연산자.

좌변 식

좌변값은 할당 대상입니다.

Property accessors
속성 접근자는 객체의 속성 또는 메서드에 대한 접근 방법을 제공합니다.
(object.property, object["property"])
new
new 연산자는 생성자의 인스턴스를 만듭니다.
new.target
생성자 문맥에서, new.targetnew에 의해 호출된 생성자를 말합니다.
super
super 키워드는 부모 생성자를 호출합니다.
...obj
전개 연산자는 (함수 호출 시) 매개변수 여럿이나, (배열 리터럴에서) 다수의 요소를 필요로 하는 곳에서 표현식을 확장합니다.

증가 및 감소

접두/접미 증감 연산자입니다.

A++
접미 증가 연산자.
A--
접미 감소 연산자.
++A
접두 증가 연산자.
--A
접두 감소 연산자.

단항 연산자

단항 연산은 피연산자가 하나뿐인 연산입니다.

delete
delete 연산자는 객체에서 속성을 지웁니다.
void
void 연산자는 식의 반환값을 버립니다.
typeof
typeof 연산자는 주어진 객체의 형을 판별합니다.
+
단항 더하기 연산자는 피연산자를 숫자로 변환합니다.
-
단항 부정 연산자는 피연산자를 숫자로 변환한 뒤 부호를 바꿉니다.
~
비트 NOT 연산자.
!
논리 NOT 연산자.

산술 연산자

산술 연산자는 피연산자로 숫자 값(리터럴이나 변수)을 취하고 숫자 값 하나를 반환합니다.

+
덧셈 연산자.
-
뺄셈 연산자.
/
나눗셈 연산자.
*
곱셈 연산자.
%
나머지 연산자.
**
지수 연산자.

관계 연산자

비교 연산자는 피연산자를 비교하고, 비교가 참인지 여부를 나타내는 Boolean 값을 반환합니다.

in
in 연산자는 객체에 주어진 속성이 있는지를 결정합니다.
instanceof
instanceof 연산자는 객체가 다른 객체의 인스턴스인지 판별합니다.
<
작음 연산자.
>
큼 연산자.
<=
작거나 같음 연산자.
>=
크거나 같음 연산자.

참고: => 는 연산자가 아니고, 화살표 함수의 표기법입니다.

같음 연산자

같음 연산자의 평가 결과는 항상 Boolean 형으로 비교가 참인지 나타냅니다.

==
동등 연산자.
!=
부등 연산자.
===
일치identity 연산자.
!==
불일치 연산자.

비트 시프트 연산자

피연산자의 모든 비트를 이동shift하는 연산.

<<
비트 좌로 시프트 연산자.
>>
비트 우로 시프트 연산자.
>>>
비트 부호 없는 우로 시프트 연산자.

이진 비트 연산자

비트 연산자는 피연산자를 32비트 집합(0과 1)으로 다루고 표준 JavaScript 숫자 값을 반환합니다.

&
비트 AND.
|
비트 OR.
^
비트 XOR.

이진 논리 연산자

논리 연산자는 보통 사용될 때 불리언(논리) 값으로 사용되고, 불리언 값을 반환합니다.

&&
논리 AND.
||
논리 OR.
??
Nullish 통합 연산자.

조건부(삼항) 연산자

(condition ? ifTrue : ifFalse)

조건부 연산자는 조건의 논리값에 따라 두 값 중 하나를 반환합니다.

선택적 연결 연산자

?.

선택적 연결 연산자는 참조가 nullish (null 또는 undefined) 인 경우 오류를 발생시키는 대신 undefined를 반환합니다.

할당 연산자

할당 연산자는 값을 그 우변 피연산자의 값에 따라 좌변 피연산자에 할당합니다.

=
할당 연산자.
*=
곱셈 할당.
**=
Exponentiation assignment.
/=
나눗셈 할당.
%=
나머지 할당.
+=
덧셈 할당.
-=
뺄셈 할당
<<=
좌로 이동 할당.
>>=
우로 이동 할당.
>>>=
부호 없는 우로 이동 할당.
&=
비트 AND 할당.
^=
비트 XOR 할당.
|=
비트 OR 할당.
&&=
논리적 AND 할당.
||=
논리적 OR 할당.
??=
논리적 nullish 할당.
[a, b] = [1, 2]
{a, b} = {a:1, b:2}

구조 분해 할당은 배열 또는 객체의 속성을 배열 또는 객체 리터럴과 비슷해 보이는 구문을 사용하여 변수에 할당할 수 있게 합니다.

쉼표 연산자

,
쉼표 연산자는 여러 식을 단문으로 평가되게 하고 마지막 식의 결과를 반환합니다.

명세

명세
ECMAScript (ECMA-262)
The definition of 'ECMAScript Language: Expressions' in that specification.

브라우저 호환성

Update compatibility data on GitHub
DesktopMobileServer
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung InternetNode.js
Addition (+)Chrome Full support 1Edge Full support 12Firefox Full support 1IE Full support 3Opera Full support 3Safari Full support 1WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support 1Samsung Internet Android Full support 1.0nodejs Full support 0.1.100
Addition assignment (x += y)Chrome Full support 1Edge Full support 12Firefox Full support 1IE Full support 3Opera Full support 3Safari Full support 1WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support 1Samsung Internet Android Full support 1.0nodejs Full support 0.1.100
Assignment (x = y)Chrome Full support 1Edge Full support 12Firefox Full support 1IE Full support 3Opera Full support 3Safari Full support 1WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support 1Samsung Internet Android Full support 1.0nodejs Full support 0.1.100
async function expressionChrome Full support 55Edge Full support 15Firefox Full support 52IE No support NoOpera Full support 42Safari Full support 10.1WebView Android Full support 55Chrome Android Full support 55Firefox Android Full support 52Opera Android Full support 42Safari iOS Full support 10.3Samsung Internet Android Full support 6.0nodejs Full support 7.6.0
Full support 7.6.0
Full support 7.0.0
Disabled
Disabled From version 7.0.0: this feature is behind the --harmony runtime flag.
awaitChrome Full support 55Edge Full support 14Firefox Full support 52IE No support NoOpera Full support 42Safari Full support 10.1WebView Android Full support 55Chrome Android Full support 55Firefox Android Full support 52Opera Android Full support 42Safari iOS Full support 10.3Samsung Internet Android Full support 6.0nodejs Full support 7.6.0
Full support 7.6.0
Full support 7.0.0
Disabled
Disabled From version 7.0.0: this feature is behind the --harmony runtime flag.
Bitwise AND (a & b)Chrome Full support 1Edge Full support 12Firefox Full support 1IE Full support 3Opera Full support 3Safari Full support 1WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support 1Samsung Internet Android Full support 1.0nodejs Full support 0.1.100
Bitwise AND assignment (x &= y)Chrome Full support 1Edge Full support 12Firefox Full support 1IE Full support 3Opera Full support 3Safari Full support 1WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support 1Samsung Internet Android Full support 1.0nodejs Full support 0.1.100
Bitwise NOT (~a)Chrome Full support 1Edge Full support 12Firefox Full support 1IE Full support 3Opera Full support 3Safari Full support 1WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support 1Samsung Internet Android Full support 1.0nodejs Full support 0.1.100
Bitwise OR (a | b)Chrome Full support 1Edge Full support 12Firefox Full support 1IE Full support 3Opera Full support 3Safari Full support 1WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support 1Samsung Internet Android Full support 1.0nodejs Full support 0.1.100
Bitwise OR assignment (x |= y)Chrome Full support 1Edge Full support 12Firefox Full support 1IE Full support 3Opera Full support 3Safari Full support 1WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support 1Samsung Internet Android Full support 1.0nodejs Full support 0.1.100
Bitwise XOR (a ^ b)Chrome Full support 1Edge Full support 12Firefox Full support 1IE Full support 3Opera Full support 3Safari Full support 1WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support 1Samsung Internet Android Full support 1.0nodejs Full support 0.1.100
Bitwise XOR assignment (x ^= y)Chrome Full support 1Edge Full support 12Firefox Full support 1IE Full support 3Opera Full support 3Safari Full support 1WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support 1Samsung Internet Android Full support 1.0nodejs Full support 0.1.100
classChrome Full support 42Edge Full support 13Firefox Full support 45IE No support NoOpera Full support 29Safari Full support 7WebView Android Full support 42Chrome Android Full support 42Firefox Android Full support 45Opera Android Full support 29Safari iOS Full support 7Samsung Internet Android Full support 4.0nodejs Full support 6.0.0
Full support 6.0.0
Full support 5.0.0
Disabled
Disabled From version 5.0.0: this feature is behind the --harmony runtime flag.
Comma operatorChrome Full support 1Edge Full support 12Firefox Full support 1IE Full support 3Opera Full support 4Safari Full support 1WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support 1Samsung Internet Android Full support 1.0nodejs Full support 0.1.100
Conditional operator (c ? t : f)Chrome Full support 1Edge Full support 12Firefox Full support 1IE Full support 3Opera Full support 3Safari Full support 1WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support 1Samsung Internet Android Full support 1.0nodejs Full support 0.1.100
Decrement (--)Chrome Full support 2Edge Full support 12Firefox Full support 1IE Full support 3Opera Full support 3Safari Full support 4WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support 3.2Samsung Internet Android Full support 1.0nodejs Full support 0.1.100
deleteChrome Full support 1Edge Full support 12Firefox Full support 1IE Full support 4Opera Full support 9Safari Full support 1WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support 1Samsung Internet Android Full support 1.0nodejs Full support 0.1.100
Destructuring assignmentChrome Full support 49Edge Full support 14Firefox Full support 41
Notes
Full support 41
Notes
Notes Firefox provided a non-standard destructuring implementation from Firefox 2 to 40.
IE No support NoOpera Full support 36Safari Full support 8WebView Android Full support 49Chrome Android Full support 49Firefox Android Full support 41
Notes
Full support 41
Notes
Notes Firefox provided a non-standard destructuring implementation from Firefox 2 to 40.
Opera Android Full support 36Safari iOS Full support 8Samsung Internet Android Full support 5.0nodejs Full support 6.0.0
Division (/)Chrome Full support 1Edge Full support 12Firefox Full support 1IE Full support 3Opera Full support 3Safari Full support 1WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support 1Samsung Internet Android Full support 1.0nodejs Full support 0.1.100
Division assignment (x /= y)Chrome Full support 1Edge Full support 12Firefox Full support 1IE Full support 3Opera Full support 3Safari Full support 1WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support 1Samsung Internet Android Full support 1.0nodejs Full support 0.1.100
Equality (a == b)Chrome Full support 1Edge Full support 12Firefox Full support 1IE Full support 3Opera Full support 3Safari Full support 1WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support 1Samsung Internet Android Full support 1.0nodejs Full support 0.1.100
Exponentiation (**)Chrome Full support 52Edge Full support 14Firefox Full support 52IE No support NoOpera Full support 39Safari Full support 10.1WebView Android Full support 51Chrome Android Full support 52Firefox Android Full support 52Opera Android Full support 41Safari iOS Full support 10.3Samsung Internet Android Full support 6.0nodejs Full support 7.0.0
Full support 7.0.0
Full support 6.5.0
Disabled
Disabled From version 6.5.0: this feature is behind the --harmony runtime flag.
Exponentiation assignment (x **= y)Chrome Full support 52Edge Full support 14Firefox Full support 52IE No support NoOpera Full support 39Safari Full support 10.1WebView Android Full support 51Chrome Android Full support 52Firefox Android Full support 52Opera Android Full support 41Safari iOS Full support 10.3Samsung Internet Android Full support 6.0nodejs Full support 7.0.0
Full support 7.0.0
Full support 6.5.0
Disabled
Disabled From version 6.5.0: this feature is behind the --harmony runtime flag.
functionChrome Full support 1Edge Full support 12Firefox Full support 1IE Full support 3Opera Full support 3Safari Full support 1WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support 1Samsung Internet Android Full support 1.0nodejs Full support 0.1.100
function*Chrome Full support 49Edge Full support 12Firefox Full support 26IE No support NoOpera Full support 36Safari Full support 10WebView Android Full support 49Chrome Android Full support 49Firefox Android Full support 26Opera Android Full support 36Safari iOS Full support 10Samsung Internet Android Full support 5.0nodejs Full support 4.0.0
Greater than (a > b)Chrome Full support 1Edge Full support 12Firefox Full support 1IE Full support 3Opera Full support 3Safari Full support 1WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support 1Samsung Internet Android Full support 1.0nodejs Full support 0.1.100
Greater than or equal (a >= b)Chrome Full support 1Edge Full support 12Firefox Full support 1IE Full support 3Opera Full support 3Safari Full support 1WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support 1Samsung Internet Android Full support 1.0nodejs Full support 0.1.100
Grouping operator ()Chrome Full support 1Edge Full support 12Firefox Full support 1IE Full support 3Opera Full support 3Safari Full support 1WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support 1Samsung Internet Android Full support 1.0nodejs Full support 0.1.100
inChrome Full support 1Edge Full support 12Firefox Full support 1IE Full support 5.5Opera Full support 4Safari Full support 1WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support 1Samsung Internet Android Full support 1.0nodejs Full support 0.1.100
Increment (++)Chrome Full support 2Edge Full support 12Firefox Full support 1IE Full support 3Opera Full support 3Safari Full support 4WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support 3.2Samsung Internet Android Full support 1.0nodejs Full support 0.1.100
Inequality (a != b)Chrome Full support 1Edge Full support 12Firefox Full support 1IE Full support 3Opera Full support 3Safari Full support 1WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support 1Samsung Internet Android Full support 1.0nodejs Full support 0.1.100
instanceofChrome Full support 1Edge Full support 12Firefox Full support 1IE Full support 5Opera Full support 4Safari Full support 1WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support 1Samsung Internet Android Full support 1.0nodejs Full support 0.1.100
Bitwise left shift (a << b)Chrome Full support 1Edge Full support 12Firefox Full support 1IE Full support 3Opera Full support 3Safari Full support 1WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support 1Samsung Internet Android Full support 1.0nodejs Full support 0.1.100
Left shift assignment (x <<= y)Chrome Full support 1Edge Full support 12Firefox Full support 1IE Full support 3Opera Full support 3Safari Full support 1WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support 1Samsung Internet Android Full support 1.0nodejs Full support 0.1.100
Less than (a < b)Chrome Full support 1Edge Full support 12Firefox Full support 1IE Full support 3Opera Full support 3Safari Full support 1WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support 1Samsung Internet Android Full support 1.0nodejs Full support 0.1.100
Less than or equal (a <= b)Chrome Full support 1Edge Full support 12Firefox Full support 1IE Full support 3Opera Full support 3Safari Full support 1WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support 1Samsung Internet Android Full support 1.0nodejs Full support 0.1.100
Logical AND (&&)Chrome Full support 1Edge Full support 12Firefox Full support 1IE Full support 3Opera Full support 3Safari Full support 1WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support 1Samsung Internet Android Full support 1.0nodejs Full support 0.1.100
Logical AND assignment (x &&= y)Chrome Full support 85Edge Full support 85Firefox Full support 79IE No support NoOpera No support NoSafari Full support 14WebView Android Full support 85Chrome Android Full support 85Firefox Android Full support 79Opera Android No support NoSafari iOS Full support 14Samsung Internet Android No support Nonodejs No support No
Logical NOT (!)Chrome Full support 1Edge Full support 12Firefox Full support 1IE Full support 3Opera Full support 3Safari Full support 1WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support 1Samsung Internet Android Full support 1.0nodejs Full support 0.1.100
Logical nullish assignment (x ??= y)Chrome Full support 85Edge Full support 85Firefox Full support 79IE No support NoOpera No support NoSafari Full support 14WebView Android Full support 85Chrome Android Full support 85Firefox Android Full support 79Opera Android No support NoSafari iOS Full support 14Samsung Internet Android No support Nonodejs No support No
Logical OR (||)Chrome Full support 1Edge Full support 12Firefox Full support 1IE Full support 3Opera Full support 3Safari Full support 1WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support 1Samsung Internet Android Full support 1.0nodejs Full support 0.1.100
Logical OR assignment (x ||= y)Chrome Full support 85Edge Full support 85Firefox Full support 79IE No support NoOpera No support NoSafari Full support 14WebView Android Full support 85Chrome Android Full support 85Firefox Android Full support 79Opera Android No support NoSafari iOS Full support 14Samsung Internet Android No support Nonodejs No support No
Multiplication (*)Chrome Full support 1Edge Full support 12Firefox Full support 1IE Full support 3Opera Full support 3Safari Full support 1WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support 1Samsung Internet Android Full support 1.0nodejs Full support 0.1.100
Multiplication assignment (x *= y)Chrome Full support 1Edge Full support 12Firefox Full support 1IE Full support 3Opera Full support 3Safari Full support 1WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support 1Samsung Internet Android Full support 1.0nodejs Full support 0.1.100
newChrome Full support 1Edge Full support 12Firefox Full support 1IE Full support 3Opera Full support 3Safari Full support 1WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support 1Samsung Internet Android Full support 1.0nodejs Full support 0.1.100
new.targetChrome Full support 46Edge Full support 13Firefox Full support 41IE No support NoOpera Full support 33Safari Full support 11WebView Android Full support 46Chrome Android Full support 46Firefox Android Full support 41Opera Android Full support 33Safari iOS Full support 11Samsung Internet Android Full support 5.0nodejs Full support 5.0.0
Nullish coalescing operator (??)Chrome Full support 80Edge Full support 80Firefox Full support 72IE No support NoOpera Full support 67Safari Full support 13.1WebView Android Full support 80Chrome Android Full support 80Firefox Android No support NoOpera Android No support NoSafari iOS Full support 13.4Samsung Internet Android No support Nonodejs Full support 14.0.0
Object initializerChrome Full support 1Edge Full support 12Firefox Full support 1IE Full support 1Opera Full support 4Safari Full support 1WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support 1Samsung Internet Android Full support 1.0nodejs Full support 0.1.100
Optional chaining operator (?.)Chrome Full support 80
Full support 80
Full support 79
Disabled
Disabled From version 79: this feature is behind the Experimental JavaScript preference (needs to be set to true). To change preferences in Chrome, visit chrome://flags.
Edge Full support 80
Full support 80
Full support 79
Disabled
Disabled From version 79: this feature is behind the Experimental JavaScript preference (needs to be set to true).
Firefox Full support 74IE No support NoOpera Full support 67
Full support 67
Full support 66
Disabled
Disabled From version 66: this feature is behind the Experimental JavaScript preference (needs to be set to true).
Safari Full support 13.1WebView Android Full support 80Chrome Android Full support 80
Full support 80
Full support 79
Disabled
Disabled From version 79: this feature is behind the Experimental JavaScript preference (needs to be set to true). To change preferences in Chrome, visit chrome://flags.
Firefox Android No support NoOpera Android No support NoSafari iOS Full support 13.4Samsung Internet Android No support Nonodejs Full support 14.0.0
Pipeline operator (|>)
Experimental
Chrome No support NoEdge No support NoFirefox No support NoIE No support NoOpera No support NoSafari No support NoWebView Android No support NoChrome Android No support NoFirefox Android No support NoOpera Android No support NoSafari iOS No support NoSamsung Internet Android No support Nonodejs No support No
Property accessorsChrome Full support 1Edge Full support 12Firefox Full support 1IE Full support 3Opera Full support 4Safari Full support 1WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support 1Samsung Internet Android Full support 1.0nodejs Full support 0.1.100
Remainder (%)Chrome Full support 1Edge Full support 12Firefox Full support 1IE Full support 3Opera Full support 3Safari Full support 1WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support 1Samsung Internet Android Full support 1.0nodejs Full support 0.1.100
Remainder assignment (x %= y)Chrome Full support 1Edge Full support 12Firefox Full support 1IE Full support 3Opera Full support 3Safari Full support 1WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support 1Samsung Internet Android Full support 1.0nodejs Full support 0.1.100
Bitwise right shift (a >> b)Chrome Full support 1Edge Full support 12Firefox Full support 1IE Full support 3Opera Full support 3Safari Full support 1WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support 1Samsung Internet Android Full support 1.0nodejs Full support 0.1.100
Right shift assignment (x >>= y)Chrome Full support 1Edge Full support 12Firefox Full support 1IE Full support 3Opera Full support 3Safari Full support 1WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support 1Samsung Internet Android Full support 1.0nodejs Full support 0.1.100
Strict equality (a === b)Chrome Full support 1Edge Full support 12Firefox Full support 1IE Full support 4Opera Full support 4Safari Full support 1WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support 1Samsung Internet Android Full support 1.0nodejs Full support 0.1.100
Strict inequality (a !== b)Chrome Full support 1Edge Full support 12Firefox Full support 1IE Full support 4Opera Full support 4Safari Full support 1WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support 1Samsung Internet Android Full support 1.0nodejs Full support 0.1.100
Subtraction (-)Chrome Full support 1Edge Full support 12Firefox Full support 1IE Full support 3Opera Full support 3Safari Full support 1WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support 1Samsung Internet Android Full support 1.0nodejs Full support 0.1.100
Subtraction assignment (x -= y)Chrome Full support 1Edge Full support 12Firefox Full support 1IE Full support 3Opera Full support 3Safari Full support 1WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support 1Samsung Internet Android Full support 1.0nodejs Full support 0.1.100
superChrome Full support 42Edge Full support 13Firefox Full support 45IE No support NoOpera Full support 29Safari Full support 7WebView Android Full support 42Chrome Android Full support 42Firefox Android Full support 45Opera Android Full support 29Safari iOS Full support 7Samsung Internet Android Full support 4.0nodejs Full support 6.0.0
thisChrome Full support 1Edge Full support 12Firefox Full support 1IE Full support 4Opera Full support 9.5Safari Full support 1WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support 1Samsung Internet Android Full support 1.0nodejs Full support 0.1.100
typeofChrome Full support 1Edge Full support 12Firefox Full support 1IE Full support 3Opera Full support 3Safari Full support 1WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support 1Samsung Internet Android Full support 1.0nodejs Full support 0.1.100
Unary negation (-)Chrome Full support 1Edge Full support 12Firefox Full support 1IE Full support 3Opera Full support 3Safari Full support 1WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support 1Samsung Internet Android Full support 1.0nodejs Full support 0.1.100
Unary plus (+)Chrome Full support 1Edge Full support 12Firefox Full support 1IE Full support 3Opera Full support 4Safari Full support 1WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support 1Samsung Internet Android Full support 1.0nodejs Full support 0.1.100
Bitwise unsigned right shift (a >>> b)Chrome Full support 1Edge Full support 12Firefox Full support 1IE Full support 3Opera Full support 3Safari Full support 1WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support 1Samsung Internet Android Full support 1.0nodejs Full support 0.1.100
Unsigned right shift assignment (x >>>= y)Chrome Full support 1Edge Full support 12Firefox Full support 1IE Full support 3Opera Full support 3Safari Full support 1WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support 1Samsung Internet Android Full support 1.0nodejs Full support 0.1.100
voidChrome Full support 1Edge Full support 12Firefox Full support 1IE Full support 5Opera Full support 4Safari Full support 3.2WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support 3Samsung Internet Android Full support 1.0nodejs Full support 0.1.100
yieldChrome Full support 39Edge Full support 12Firefox Full support 26
Notes
Full support 26
Notes
Notes Starting with Firefox 33, the parsing of the yield expression has been updated to conform with the ES2015 specification.
Notes Starting with Firefox 29, an IteratorResult object returned for completed generator function.
IE No support NoOpera Full support 26Safari Full support 10WebView Android Full support 39Chrome Android Full support 39Firefox Android Full support 26
Notes
Full support 26
Notes
Notes Starting with Firefox 33, the parsing of the yield expression has been updated to conform with the ES2015 specification.
Notes Starting with Firefox 29, an IteratorResult object returned for completed generator function.
Opera Android Full support 26Safari iOS Full support 10Samsung Internet Android Full support 4.0nodejs Full support 4.0.0
Full support 4.0.0
Full support 0.12
Disabled
Disabled From version 0.12: this feature is behind the --harmony runtime flag.
yield*Chrome Full support 39Edge Full support 12Firefox Full support 27
Notes
Full support 27
Notes
Notes Starting with Firefox 33, the parsing of the yield expression has been updated to conform with the ES2015 specification.
IE No support NoOpera Full support 26Safari Full support 10WebView Android Full support 39Chrome Android Full support 39Firefox Android Full support 27
Notes
Full support 27
Notes
Notes Starting with Firefox 33, the parsing of the yield expression has been updated to conform with the ES2015 specification.
Opera Android Full support 26Safari iOS Full support 10Samsung Internet Android Full support 4.0nodejs Full support 4.0.0
Full support 4.0.0
Full support 0.12
Disabled
Disabled From version 0.12: this feature is behind the --harmony runtime flag.

Legend

Full support  
Full support
No support  
No support
Experimental. Expect behavior to change in the future.
Experimental. Expect behavior to change in the future.
See implementation notes.
See implementation notes.
User must explicitly enable this feature.
User must explicitly enable this feature.

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