# How to make a calculator using javascript and html

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## How to build an HTML calculator app from scratch using JavaScript

making a simple calculator with basic HTML, CSS and JavaScript. They are created using the tag in which the tag is used to.

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CSS3 box shadows are used to create the 3D effect and transitions are used for the smooth press effect. Basic regex is used for validations and text replacements. For every button number or operator pressed, the value is appended to an equation string displayed on the calculator screen which is later used in the JS eval function to generate the output. Awesome work, thanks for sharing! Any idea? Great tutorial.

Javascript lets you do all that you will never have thought about. At this time JavaScript is one of the most demanding languages.
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This is an epic article where you learn how to build a calculator from scratch. Before you attempt follow through the lesson, please make sure you have a decent command of JavaScript. Minimally, you need to know these things:. I urge you to try and build the calculator yourself before following the lesson. This has already been done for you in the starter file. You can find the starter file at this pen.

## Make a calculator using Javascript and CSS3

This tutorial provides an exercise in doing just that by describing how to build a simple calculator app. I will explain each step at a higher level than in my previous tutorials, so if you have trouble following, try doing the Random Quote Machine and Wikipedia Search App tutorials in that order, then come back to this one at a later date. Also, make sure you complete the previous tutorial which explains how the calculator layout was crafted using CSS Grid. This article focuses only on the JavaScript logic employed to make the calculator work. You can find the starting point for this tutorial on JSFiddle. It contains all the necessary markup to build the calculator layout.

Our calculator will only able to perform basic math operations: addition, subtraction, multiplication and division. I simplified this tutorial as best as I could, so you would survive :. So what exactly do we need to build this? But in fancier terms, these are the components we need:. Visually, a calculator is a table enclosed in a container.

## Making a Calculator with Basic HTML, CSS and JavaScript

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## 5 thoughts on “How to make a calculator using javascript and html”

1. We'll focus on the JavaScript you need to write—how to think about building the calculator, how to write the code, and eventually, how to clean.

2. Calculator is one of the basic project a Javascript or any other language a newbie programmer should probably know how to create.

3. By using our site, you acknowledge that you have read and understood our Cookie JavaScript Course | What is JavaScript? NodeJS | Building simple REST API in express. HTML | Calculator. Here a Calculator is going to be formed with HTML code. HTML Code: create button and assign value to each button -->.