Calculator in Javascript with source code for free

Calculator in Javascript

Today, in this post we will be discussing how to create a calculator in javascript for free. In the last post, we discussed how to create a beautiful countdown timer in HTML, CSS, and javascript. Let’s see, how to create a calculator in javascript.

Calculator in Javascript:


This calculator is a simple calculator and it is designed using CSS properties. It’s also working.


 As HTML is a markup language and we use this language to create the web page skeleton. We can only create the skeleton of the calculator in HTML but we can’t design it using Html.

CSS properties:

CSS has a huge list of properties and we can use these properties for free to design our website pages. We have designed the screen and buttons of the calculator with the help of CSS properties. This calculator has a soft UI.

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Javascript libraries:

Javascript has a huge list of libraries. It is used for various purposes. We have used the javascript libraries just to add the functionalities to our calculator buttons and switch from dark mode to light mode. Calculator cant work without javascript libraries. This is a basic calculator. So, if you want to create this type of simple calculator in javascript then follow us.

How to create a calculator in javascript:

Follow below steps

Download a code editor:

It is the basic need for creating this type of project in HTML, CSS, and javascript.

Html source code:

Now save the file by using the extension .html at the end of the file name. This extension will understand the browser and code editor to understand the type of file.

CSS source code:

Again create a new file for CSS. The compiler and code editor will understand the type of the file by using the extension of .css at the end of the file name.

Javascript source code:

Download source code:

If you are unable to use or connect the files with each other. Then we created a solution. The download button is given below.

If you have any questions related to the calculator in javascript then ask these questions in the comment section. We will try to clear your doubts related to the calculator.

Tasks and Conclusion:

It’s a great step to create a calculator in javascript. It will help you to understand a lot of libraries of javascript and properties of CSS. Now I am assigning you some tasks and they will lead you toward a great learning journey. 

You have to change the screen size. Then change the position of the + button from the right below corner to the upper left corner. Also, change the color of these buttons. All the buttons have round corners. Just remove that from the buttons that made them round from corners. By doing all of these things you can create beautiful logic in your programming skill.

Thanks for reading this article.

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