JavaScript tutorial:
Operator Summary

Computational

Addition (+)
Decrement (--)
Division (/)
Increment (++)
Modulus (%)
Multiplication (*)
Subtraction (-)
Unary negation (-)

Logical

Comma (,)
Conditional (trinary) (?:)
Equality (==)
Greater than (>)
Greater than or equal to (>=)
Identity (===)
Inequality (!=)
Less than (<)
Less than or equal to (<=)
Logical AND (&&)
Logical NOT (!)
Logical OR (||)
Nonidentity (!==)

Bitwise

Bitwise AND (&)
Bitwise Left Shift (<<)
Bitwise NOT (~)
Bitwise OR (|)
Bitwise Right Shift (>>)
Bitwise XOR (^)
Unsigned Right Shift (>>>)

Assignment

Assignment (=)
Compound Assignment Operators

Miscellaneous

delete
instanceof
new
typeof
void