자바스크립트 연산자 우선순위

JavaScript Operator Precedence Values

Value	Operator	Description	Example
19	( )	Expression grouping	(3 + 4)
18	.	Member	person.name
18	[]	Member	person["name"]
17	()	Function call	myFunction()
17	new	Create	new Date()
16	++	Postfix Increment	i++
16	--	Postfix Decrement	i--
15	++	Prefix Increment	++i
15	--	Prefix Decrement	--i
15	!	Logical not	!(x==y)
15	typeof	Type	typeof x
14	*	Multiplication	10 * 5
14	/	Division	10 / 5
14	%	Modulo division	10 % 5
14	**	Exponentiation	10 ** 2
13	+	Addition	10 + 5
13	-	Subtraction	10 - 5
12	<<	Shift left	x << 2
12	>>	Shift right	x >> 2
12	>>>	Shift right (unsigned)	x >>> 2
11	<	Less than	x < y
11	<=	Less than or equal	x <= y
11	>	Greater than	x > y
11	>=	Greater than or equal	x >= y
10	==	Equal	x == y
10	===	Strict equal	x === y
10	!=	Unequal	x != y
10	!==	Strict unequal	x !== y
6	&&	Logical and	x && y
5	||	Logical or	x || y
3	=	Assignment	x = y
3	+=	Assignment	x += y
3	-=	Assignment	x -= y
3	*=	Assignment	x *= y
3	%=	Assignment	x %= y
3	<<=	Assignment	x <<= y
3	>>=	Assignment	x >>= y
3	>>>=	Assignment	x >>>= y
3	&=	Assignment	x &= y
3	^=	Assignment	x ^= y
3	|=	Assignment	x |= y

Pale red entries indicates experimental or proposed technology (ECMAScript 2016 or ES7)

Expressions in parentheses are fully computed before the value is used in the rest of the expression.

출처 :: https://www.w3schools.com/