Skip to content
Related Articles
Open in App
Not now

Related Articles

JavaScript Remainder(%) Operator

Improve Article
Save Article
  • Last Updated : 06 Jan, 2023
Improve Article
Save Article

The remainder operator in JavaScript is used to get the remaining value when an operand is divided by another operand. In some languages, % is considered modulo. Modulo and Remainder work differently when the sign of both operands is different.

In JavaScript remainder takes the sign of the dividend and to get modulo ((a % n) + n) % n should be used instead of a % n.

Syntax

remainder = var1 % var2

Example 1: This example returns the positive remainder in this case both modulo and remainder will be the same as both operands are positive.

Javascript




<script>
    // Initializing variables
    var a =4
    var n = 2
     
    // Calculating remainder
    var rem = a%n
     
    // Calculating modulo
    var mod = ((a%n)+n)%n
     
    // Printing result
    console.log("Remainder is "+rem)
    console.log("Modulo is "+mod)
</script>


Output:

"Remainder is 0"
"Modulo is 0"

Example 2: This example returns a negative remainder as the dividend is negative.

Javascript




<script>
    // Initializing variables
    var a =-4
    var n = 2
     
    // Calculating remainder
    var rem = a%n
     
    // Calculating modulo
    var mod = ((a%n)+n)%n
     
    // Printing result
    console.log(rem)
    console.log(mod)
</script>


Output:

-0
0

Example 3: Remainder with Infinity and NaN

Javascript




<script>
    // Both operands are NaN
    console.log(NaN%NaN)
     
    // Dividend is NaN
    console.log(NaN%2)
     
    // Dividend is Nan and Divisor is Infinity
    console.log(NaN%Infinity)
     
    // Dividend is Infinity and Divisor is NaN
    console.log(Infinity%NaN)
     
    // Both operands are Infinity
    console.log(Infinity%Infinity)
     
    // Dividend is infinity
    console.log(Infinity%5)
</script>


Output:

NaN
NaN
NaN
NaN
NaN
NaN

We have a complete list of Javascript Operators, to check those please go through the Javascript Operators Complete Reference article.


My Personal Notes arrow_drop_up
Related Articles

Start Your Coding Journey Now!