# How to Multiply Two Decimal Numbers in Javascript

In this tutorial, you will learn how to multiply two decimal numbers in javascript. Multiplication of decimal numbers is one of the basic arithmetic operations which every newbie developer should be able to perform without any issue.  But it can also be tricky if you are trying to multiply 2 decimal numbers that are coming from 2 different input fields.

Almost in every programming language, we have a multiplication operator (`*`) to multiply one number to another and it is also present in javascript. But since the value present in the input field is of string type, we have to convert it into number type using `Number()` method and then do the calculation using multiplication operator (`*`).

In the following example, we have 2 input fields in which we will enter 2 random numbers. Upon click of a button, we will perform multiplication and display the result on the screen.  Please have a look over the code example and the steps given below.

HTML & CSS

• We have 4 elements in the HTML file (`div`, `input`, `button`, and `h1`). The `div` element is just a wrapper for the rest of the elements.
• The `innerText` for the `button` element is `“Multiply”` and for the `h1` element, it is `“Result”`.
• We have done some basic styling using CSS and added the link to our `style.css` stylesheet inside the `head` element.
• We have also included our javascript file `script.js` with a `script` tag at the bottom.
```<!DOCTYPE html>
<html lang="en">
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<body>

<div class="container">
<input type="number" id="firstInput" placeholder="Enter Number">
<input type="number" id="secondInput" placeholder="Enter Number">
<button>Multiply</button>
<h1>Result</h1>
</div>

<script src="script.js"></script>
</body>
</html>```
```.container {
text-align: center;
}

button {
margin-top: 10px;
}

input {
display: block;
margin: 10px auto;
}

input[type=number]::-webkit-inner-spin-button,
input[type=number]::-webkit-outer-spin-button {
-webkit-appearance: none;
margin: 0;
}```

Javascript

• We have selected both the `input` elements, `button` element, and `h1` element using the `document.querySelector()` method and stored them in `firstInput`, `secondInput`, `btnMultiply`, and `output` variables respectively.
• We have attached a `click` event listener to the `button` element.
• In the event handler function, we are passing values of both the `input` elements to the `Number()` method and performing the calculation using the multiplication operator (`*`). The result is stored in the `result` variable.
• We only want the `result` to be up to 2 decimal places and that is why we are using the `toFixed()` method and passing 2 as a parameter.
• We are displaying the `result` in the `h1` element using the `innerText` property.
```let firstInput = document.querySelector("#firstInput");
let secondInput = document.querySelector("#secondInput");
let btnMultiply = document.querySelector("button");
let output = document.querySelector("h1");