![]() ![]() So, when the user hits number keys then we store these values in operands. Then we check what key is pressed by the user like operators, operands, decimal or clear according to this key we store it in different variables that we declared. After this, we start work on functionalities.įirstly we have to initialise the value of each variable and constant. To make this UI we use CSS Grid box which is the best practice of writing proper responsive code. Initially, we have to make a div container in which we are going to add all buttons with proper styling. So, coding part begins here for the first case. string methods like includes, contains etc.change the text with the value attribute.Output screen – This is the screen where we can check what input we are entering and showing all the values that we entered.īefore starting this Project you must have knowledge or idea of these things: Input buttons – where we display all keys So, in the UI perspective we have to work on:Ĭalculator tile – where we show the title Mainly the functions that we need to work for calculator are handling the keypresses, inputting the digits, inputting the decimal point/key, handling operators, resisting the calculators, updating the display, equal key and clear key.Īs we know calculator consists of keys and display. This project will help you to improve your logical ability and coding skills. In both cases we are going to add some simple math operations like addition, subtraction, multiplication, division in our basic calculator. In first way we make functions for all operations and in the second we use some inbuilt global function to make a calculator. In this tutorial, I will tell you two ways to make a calculator using basic HTML, CSS and JavaScript.
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