JavaScript Operators
JavaScript Operators
Category
Operator
Description
Usage Example
Value/Result
String
+
concatenation
"Java" + "Script"
Arithmetic
+
addition
3 + 3
-
subtraction
6 - 2
unary negation
-4
*
multiplication
4 * 4
/
division
15/5
%
modulus
22%7
++
increment and then return value
x=4; ++x
return value and then increment
x=4; x++
--
decrement and then return value
x=3; --x
return value and then decrement
x=4; x--
Bit Manipulation
&
and
11 & 7
|
or
8 | 7
^
exclusive or
1 ^ 7
<<
left shift
8 << 3
>>
sign-propagating right shift
-3 >> 2
>>>
zero-fill right shift
-7 >>> 3
Logical
&&
logical and
true && false
||
logical or
true || false
!
not
!true
Comparison
==
equal
3 == 7
!=
not equal
3 != 7
<
less than
3 < 7
<=
less than or equal
3 <= 7
>
greater than
3 > 7
>=
greater than or equal
3 >= 7
Conditional Expression
(condition) ? value1 : value2
if condition is true then value1 else value2
true ? 3 : 7