Operators

Arithmetic Operators

Operator	Description	Example
+	Addition / Concatenation	1 + 2 => 3
-	Subtraction	5 - 3 => 2
*	Multiplication	2 * 3 => 6
/	Division	6 / 3 => 2
%	Modulo	7 % 3 => 1

Increment/Decrement

x++     // Post-increment
++x     // Pre-increment
x--     // Post-decrement
--x     // Pre-decrement

Comparison Operators

Operator	Description
==	Equal
<>	Not equal
<	Less than
>	Greater than
<=	Less than or equal
>=	Greater than or equal

Logical Operators

Operator	Description
&&	Logical AND
||	Logical OR
!	Logical NOT

Ternary Operator

condition ? valueIfTrue : valueIfFalse

Optional Chaining

obj?.property
obj?.nested?.value

Spread Operator

[...arr1, ...arr2, newItem]
{ ...obj1, ...obj2, newProp: value }

Operator Precedence

From highest to lowest:

1. Parentheses ()
2. Member access . [] ?.
3. Unary operators - ! ~ ++ -- delete
4. Multiplication/Division/Modulo * / %
5. Addition/Subtraction + -
6. Comparison < > <= >=
7. Equality == <>
8. Logical AND &&
9. Logical OR ||
10. Ternary ?:
11. Assignment =