JavaScript operators( from Javascrip: The definitive guide, 4th guide)

Table 5-1. JavaScript operators

P	A	Operator	Operand type(s)	Operation performed
15	L	.	object, identifier	Property access
	L	[]	array, integer	Array index
	L	( )	function, arguments	Function call
	R	new	constructor call	Create new object
14	R	++	lvalue	Pre- or post-increment (unary)
	R	--	lvalue	Pre- or post-decrement (unary)
	R	-	number	Unary minus (negation)
	R	+	number	Unary plus (no-op)
	R	~	integer	Bitwise complement (unary)
	R	!	boolean	Logical complement (unary)
	R	delete	lvalue	Undefine a property (unary)
	R	typeof	any	Return data type (unary)
	R	void	any	Return undefined value (unary)
13	L	*, /, %	numbers	Multiplication, division, remainder
12	L	+, -	numbers	Addition, subtraction
	L	+	strings	String concatenation
11	L	<<	integers	Left shift
	L	>>	integers	Right shift with sign-extension
	L	>>>	integers	Right shift with zero extension
10	L	<, <=	numbers or strings	Less than, less than or equal
	L	>, >=	numbers or strings	Greater than, greater than or equal
	L	instanceof	object, constructor	Check object type
	L	in	string, object	Check whether property exists
9	L	==	any	Test for equality
	L	!=	any	Test for inequality
	L	===	any	Test for identity
	L	!==	any	Test for non-identity
8	L	&	integers	Bitwise AND
7	L	^	integers	Bitwise XOR
6	L	|	integers	Bitwise OR
5	L	&&	booleans	Logical AND
4	L	||	booleans	Logical OR
3	R	?:	boolean, any, any	Conditional operator (3 operands)
2	R	=	lvalue, any	Assignment
	R	*=, /=, %=, +=, -=, <<=, >>=, >>>=, &=, ^=, |=	lvalue, any	Assignment with operation
1	L	,	any	Multiple evaluation