How to usetoString(2) Method in Javascript

Approach 2: Using Loop and String Concatenation

The toString(2) method is a built-in JavaScript method available for number objects that converts a numeric value (decimal number) to its binary representation as a string.

Syntax:

num.toString(2)

Example: In this example, we are using the toString(2) method to convert our given numeric value to binary.

Javascript

function decimalToBinary(val) {
    return val.toString(2);
}

let num1 = 10;
let result = decimalToBinary(num1);
console.log("Binary representation:", result);

Output

Binary representation: 1010

JavaScript Program to Convert Decimal to Binary

In this article, we are going to learn the conversion of numeric values from decimal to binary. Binary is a number system with 2 digits (0 and 1) representing all numeric values.

Given a number N which is in decimal representation. our task is to convert the decimal representation of the number to its equivalent binary representation.

Example 1:

Input : 7
Output : 111
Input : 10
Output : 1010

If the decimal number is 10.

The remainder when 10 is divided by 2 is zero. Therefore, arr[0] = 0.
Divide 10 by 2. The new number is 10/2 = 5.
The remainder when 5 is divided by 2 is 1. Therefore, arr[1] = 1.
Divide 5 by 2. The new number is 5/2 = 2.
The remainder, when 2 is divided by 2, is zero. Therefore, arr[2] = 0.
Divide 2 by 2. The new number is 2/2 = 1.
The remainder when 1 is divided by 2 is 1. Therefore, arr[3] = 1.
Divide 1 by 2. The new number is 1/2 = 0.
Since the number becomes = 0.
Print the array in reverse order. Therefore the equivalent binary number is 1010.

There are several approaches that can be used to Convert Decimal to Binary, which are listed below: