Web Standards Programmer's Reference: HTML, CSS, JavaScript®, Perl, Python®, and PHP

C.2. Operators

JavaScript Arithmetic Operators

Operator	Use
+	Addition
-	Subtraction
*	Multiplication
/	Division
%	Modulus
++	Increment
--	Decrement

JavaScript Assignment Operators

Operator	Use
=	Assignment
+=	Increment assignment
-=	Decrement assignment
*=	Multiplication assignment
/=	Division assignment
%=	Modulus assignment

JavaScript Comparison Operators

Operator	Use
==	Is equal to
===	Exactly equal to, in value and type
!=	Is not equal to
!==	Is not exactly equal to
>	Is greater than
<	Is less than
>=	Is greater than or equal to
<=	Is less than or equal to

JavaScript Logical Operators

Operator	Use
&&	And
||	Or
!	Not

JavaScript Bitwise Operators

Operator	Use
&	And
|	Or
^	Xor
~	Not
<<	Left shift
>>	Right shift
>>>	Zero fill right shift

JavaScript Miscellaneous Operators

Operator	Use
.	Object/property/method separator
?	Condition operator
,	Specify multiple expressions in place of one expression. For example, you can use this operator to specify two variables to initialize at the beginning of a for loop: for (x=0, y=0; x<=20; x++) { // loop code }
delete	Delete specified object
new	Create new object
this	Reference current object
typeof	Type of object (number, string, and so on)
void	Evaluate expression without return value

String Operators

Operator	Use
+	Concatenation

Escape Characters

Characters	Description
\'	Single quote
\"	Double quote
\\	Backslash
\b	Backspace
\f	Form feed
\n	Newline
\r	Carriage return
\t	Tab

The backslash can also be used to escape any character simply by prefixing the character with a backslash.