convertDecimalToBinary()

Step 1: Understand the Problem

First and foremost, we should comprehend what the function requires us to do. It basically asks us to convert decimal numbers to binary. The binary number system is base 2, using only bits 0 and 1. In Javascript, there is a built-in method called toString() that we can utilize to convert decimal to binary. It requires only a single argument in which you need to pass the base of the number system.

Let's construct a basic function that takes in a decimal number as an argument.

function convertDecimalToBinary(decimal) {

}

Step 2: Use the toString Method

We will now use the toString() method inside our function to convert the decimal number to a binary number. The base for binary numbers is 2.

function convertDecimalToBinary(decimal) {
  var binary = decimal.toString(2);
}

Step 3: Return the Result

After we convert the decimal number to a binary, we have to make it the return value of our function so that it can be properly used.

function convertDecimalToBinary(decimal) {
  var binary = decimal.toString(2);
  return binary;
}

Step 4: Test the Function

Now, let's test our function with a decimal number to see if it gives us the correct binary equivalent.

console.log(convertDecimalToBinary(10)); // Expected output: 1010

If you copy the above code, paste it into a JavaScript compatible text editor, and run it, it should print the expected output which is 1010.

Conclusion

In this post, we saw that converting a decimal number to a binary number in JavaScript is fairly straightforward thanks to the built-in toString() method. We learned how to create a function that can be used to perform this conversion. Here is the final code of our JavaScript function:

function convertDecimalToBinary(decimal) {
  var binary = decimal.toString(2);
  return binary;
}

console.log(convertDecimalToBinary(10)); // Outputs: 1010

This function can be used universally for any decimal to binary conversion job.