JS Operators

JavaScript Operators are useful for algorithmic solutions.

1. Addition +

x + y

2. Subtraction -

x - y

3. Multiplication *

x * y

4. Exponentiation (ES2016) **

In mathematics the power operation looks like

3*3 = 9 Multiplay the main number as many times as the power number is.

x ** y 

5. Division /

x / y

Division operations divides numbers, first number divided by second number.

<script>
let x = 5;
let y = 2;
let z = x / y;
</script>
// output 2.5

6. Modulus (Division Remainder) %

x % y

In JavaScript the remainder operator returns the number that is not divided, as an example:

<script>
let x = 11;
let y = 2;
let z = x % y;
</script>
// output 1

Lets expound this

11 can’t be divided by 2 and be an even number

11/2 = 5.5 this is not modulus solution so then well go an number less

10 is divide by 2

10/2 =5 and still this is not the modulus solution,

The modulus solution is remaining 1, as the initial number was 11

1 is the number left after we were able to divide number 10 by 2.

7. Increment ++

Increment operation means adds one

Postfix increment

y = x++

Postfix returns the original value of the variable

<script>
let x = 5;
y = x++;
</script>
Output
// y = 5
// x = 6

Prefix Increment

y = ++x

Prefix increments the original value of the variable

<script>
let x = 5;
y = ++x;
</script>
Output
// y = 6
// x = 6

8. Decrement —

Increment operation means subtracts one

Postfix Decrement

y = x--

Postfix returns the original value of the variable

<script>
let x = 5;
y = x--;
</script>
Output
// y = 5
// x = 4

Prefix Decrement

y = --x

Prefix decrements the original value of the variable

<script>
let x = 5;
y = --x;
</script>
Output
// y = 4
// x = 4

Happy Coding !

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Stela Capsa - Student - Flatiron School | LinkedIn