Arithmetic Operations

Question: What arithmetic operations are supported in JavaScript?

Answer: JavaScript supports the following arithmetic operations (which you can group in brackets to form more complex expressions):

• unary operations
• binary operations
• shifts
• mathematical functions

Unary operations have one argument (in the following examples, the argument is a):

-a // change the sign of a
~a // bitwise NOT a
++a // add 1 to a (before using a)
a++ // add 1 to a (after using a)
--a // subtract 1 from a (before using a)
a-- // subtract 1 from a (after using a)

Binary operations operations have two arguments (in the following examples, the arguments are a and b):

a * b // multiply a by b
a / b // divide a by b
a % b // find the remainder of division of a by b
a + b // add a and b
a - b // subtract b from a
a & b // bitwise a AND b
a | b // bitwise a OR b
a ^ b // bitwise a XOR b

Shifts are the following operations:

a << b // shift a by b bits to the left
 // (padding with zeros)
a >> b // shift a by b bits to the right
 // (copying the sign bit)
a >>> b // shift a by b bits to the right 
 // (padding with zeros)

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