JavaScript Arithmetic Operators
JavaScript Arithmetic Operators are the operators that operate upon the numerical values and return a numerical value. Any kind of arithmetic operations performance required these operators.
JavaScript Assignment Operators list: There are so many arithmetic operators as shown in the table with the description.
Addition (+): The addition operator takes two numerical operands and gives their numerical sum. It also concatenates two strings or numbers.
Example:
Javascript
let x = 1 + 2
console.log(x)
let y = 5 + "hello"
console.log(y)
|
Output:
3
5hello
Subtraction (-): The subtraction operator gives the difference between two operands in the form of numerical value.
Example:
Javascript
let x = 10 - 7
console.log(x)
let y = "Hello" - 1
console.log(y)
|
Output:
3
NaN
Multiplication (*): The multiplication operator gives the product of operands where one operand is a multiplicand and another is multiplier.
Example:
Javascript
let x = 3 * 3
let y = -4 * 4
console.log(x)
console.log(y)
let a = Infinity * 0
let b = Infinity * Infinity
console.log(a)
console.log(b)
let z = 'hi' * 2
console.log(z)
|
Output:
9
-16
NaN
Infinity
NaN
Division (/): The division operator provides the quotient of its operands where the right operand is the divisor and the left operand is the dividend.
Example:
Javascript
let x = 5 / 2
let y = 1.0 / 2.0
console.log(x)
console.log(y)
let a = 3.0 / 0
let b = 4.0 / 0.0
console.log(a)
console.log(b)
let z = 2.0 / -0.0
console.log(z)
|
Output:
2.5
0.5
Infinity
Infinity
-Infinity
Modulus (%): The modulus operator returns the remainder left over when a dividend is divided by a divisor. The modulus operator is also known as the remainder operator. It takes the sign of the dividend.
Example:
Javascript
let x = 9 % 5
let y = -12 % 5
let z = 1 % -2
let a = 5.5 % 2
let b = -4 % 2
let c = NaN % 2
console.log(x)
console.log(y)
console.log(z)
console.log(a)
console.log(b)
console.log(c)
|
Output:
4
-2
1
1.5
0
NaN
Exponentiation (**): The exponentiation operator gives the result of raising the first operand to the power of the second operand. The exponentiation operator is right-associative.
In JavaScript, it is not possible to write an ambiguous exponentiation expression i.e. you cannot put an unary operator (+ / – / ~ / ! / delete / void) immediately before the base number.
Example:
Javascript
let y = -(4 ** 2)
let z = 2 ** 5
let a = 3 ** 3
let b = 3 ** 2.5
let c = 10 ** -2
let d = 2 ** 3 ** 2
let e = NaN ** 2
console.log(y)
console.log(z)
console.log(a)
console.log(b)
console.log(c)
console.log(d)
console.log(e)
|
Output:
-16
32
27
15.588457268119896
0.01
512
NaN
Increment (++): The increment operator increments (adds one to) its operand and returns a value.
- If used postfix with the operator after the operand (for example, x++), then it increments and returns the value before incrementing.
- If used prefix with the operator before the operand (for example, ++x), then it increments and returns the value after incrementing.
Example:
Javascript
let a = 2;
b = a++;
let x = 5;
y = ++x;
console.log(a)
console.log(b)
console.log(x)
console.log(y)
|
Output:
3
2
6
6
Decrement (- -): The decrement operator decrements (subtracts one from) its operand and returns a value.
- If used postfix, with operator after operand (for example, x–), then it decrements and returns the value before decrementing.
- If used prefix, with the operator before the operand (for example, –x), then it decrements and returns the value after decrementing.
Example:
Javascript
let a = 2;
b = --a;
let x = 3;
y = x--;
console.log(a)
console.log(b)
console.log(x)
console.log(y)
|
Output:
1
1
2
3
Unary Negation(-): This is a unary operator i.e. it operates on a single operand. It gives the negation of an operand.
Example:
Javascript
let a = 3;
b = -a;
let x = "3" ;
y = -x;
console.log(a)
console.log(b)
console.log(x)
console.log(y)
|
Output:
3
-3
3
-3
Unary Plus(+): This is a way to convert a non-number into a number. Although unary negation (-) also can convert non-numbers, unary plus is the fastest and preferred way of converting something into a number, because it does not perform any other operations on the number.
Example:
Javascript
let a = +4
let b = + '2'
let c = + true
let x = + false
let y = + null
console.log(a)
console.log(b)
console.log(c)
console.log(x)
console.log(y)
|
Output:
4
2
1
0
0
Supported Browsers: The browsers supported by all JavaScript Arithmetic operators are listed below:
- Google Chrome
- Firefox
- Opera
- Safari
- Microsoft Edge
- Internet Explorer
We have a complete list of Javascript operators, to check those please go through this Javascript Operators Complete reference article.
We have a Cheat Sheet on Javascript where we covered all the important topics of Javascript to check those please go through Javascript Cheat Sheet-A Basic guide to JavaScript.
Last Updated :
21 Jun, 2023
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