JavaScript Program to Subtract Two Numbers

In this article, we will see how to subtract two numbers in JavaScript. A Basic arithmetic operation known as Subtraction involves taking one number (the "subtrahend") away from another (the "minuend") in order to calculate their difference. It is denoted by the minus sign (-). A subtraction's outcome is referred to as the "difference."

Syntax:

Result = Minuend - Subtrahend

Let's take two numbers:

Input: a = 10 , b = 20 
Output: 
b - a = 20 - 10 = 10 
a - b = 10 - 20 = -10

Using the Negative Operator ( - ) in Console

We can directly perform Subtraction operations in the console by using the "console.log()" statement by providing two operands that will print the exact difference value.

Example: This example describes the subtraction of two numbers using "console.log".

-10
10
10
-10
10
0

Using User Defined Functions

Functions in Javascript can be used to calculate the difference between the 2 operands. The function will take parameters as 2 numbers, then the function will return the subtraction of the input parameters. 

Syntax:

function fun_name (param1 , param2) {
 return param1 - param2 ;
}

Example: This example describes the subtraction of 2 numbers using a Function.

after subtraction : -10

Using Arrow Function

The subtraction of two numbers can also be done using the arrow function, where the 2 variables are passed as a parameter of that function and return the value after subtraction

Syntax:

let var_name = (param) => {
 // code
}

Example: This example describes the subtraction of 2 numbers using the Arrow function.

after subtraction : -10

Using the Subtract Assignment Operator

It subtracts the right operand from the left operand and assigns the result to the left operand. The value provided on the right-hand side will decide how much value it must be decreased.

Syntax:

var_name -= value;

Example: This example describes the subtraction of 2 numbers using the subtraction AND assignment operator.