Skip to main content

Create an Awesome Calculator Using HTML, CSS and JavaScript - Creation Code



Calculator:

The first solid-state electronic calculator was created in the early 1960s. Pocket-sized devices became available in the 1970s, especially after the Intel 4004, the first microprocessor, was developed by Intel for the Japanese calculator company Busicom. They later became used commonly within the petroleum industry(oil and gas)


In this post, we will create a simple calculator for use on the web with the help of HTML, CSS, and javascript


HTML:

<!DOCTYPE html>
<html lang="en">

<head>
 <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>calculator</title>
 <link rel="stylesheet" href="./style.css">
</head>

<body>
 <section class="calculator">
  <form>
   <input type="text" name="" id="" class="screen">
  </form>
  <div class="buttons">
   <!-- yellow -->
   <button type="button" class="btn btn-A" data-num=""></button>
   <button type="button" class="btn btn-A" data-num="/">/</button>
   <button type="button" class="btn btn-A" data-num="-">-</button>
   <button type="button" class="btn btn-A" data-num="+">+</button>
   <!-- grey buttons -->
   <button type="button" class="btn btn-B" data-num=".">.</button>
   <button type="button" class="btn btn-B" data-num="9">9</button>
   <button type="button" class="btn btn-B" data-num="8">8</button>
   <button type="button" class="btn btn-B" data-num="7">7</button>
   <button type="button" class="btn btn-B" data-num="6">6</button>
   <button type="button" class="btn btn-B" data-num="5">5</button>
   <button type="button" class="btn btn-B" data-num="4">4</button>
   <button type="button" class="btn btn-B" data-num="3">3</button>
   <button type="button" class="btn btn-B" data-num="2">2</button>
   <button type="button" class="btn btn-B" data-num="1">1</button>
   <button type="button" class="btn btn-B" data-num="0">0</button>
   <button type="button" class="btn-C btn-B">=</button>
   <button type="button" class="btn-D btn-B">C</button>
  </div>
 </section>
 <script src="./js/cal.js"></script>
</body>
</html>


CSS:

*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
   }
   
   body{
    min-height: 50vh;
    display: flex;
    align-items: center;
    justify-content: center;
   
   }
   
   .calculator{
    flex: 0 0 95%;
   }
   .screen{
    width: 100%;
    font-size: 7rem;
    padding: 0.5rem;
    background: white;
    color: black;
    border:none;
   }
   
   .buttons{
    display: flex;
    flex-wrap: wrap;
   }
   
   button{
    flex:0 0 25%;
    border: 1px solid black;
    padding: 0.25rem 0;
   }
   button:hover{
    background: white;
   }
   .btn-A{
    background: green;
    color: black;
   }
   .btn-B{
    background: red;
   }
   .btn,.btn-C,.btn-D{
    font-size: 4rem;
   }
   .btn-C{
    background: yellow;
   }
   .btn-D{
    background: red;
   }

JavaScript:

(function(){
  
    let screen = document.querySelector('.screen');
    let buttons = document.querySelectorAll('.btn');
    let clear = document.querySelector('.btn-D');
    let equal = document.querySelector('.btn-C');
    // numbers that are clicked
    buttons.forEach(function(button){
      button.addEventListener('click', function(e){
        let value = e.target.dataset.num;
        screen.value += value;
      })
    });
    
    equal.addEventListener('click', function(e){
      if(screen.value === ''){
        screen.value = 'Please Enter a Value';
      } else {
        let answer = eval(screen.value);
        screen.value = answer;
      }
    })
    
    clear.addEventListener('click', function(e){
      screen.value = '';
    })
   
  })();

Follow my socials:

Youtube:https://www.youtube.com/channel/UCU1qNFntn7dCi9uqyvrGKOg

Instagram: https://www.instagram.com/python.math/

Twitter:https://twitter.com/Pritish369


For any question or coding discussion, you can join my discord or telegram:

Discord:https://discord.gg/be7MmSuV

Telegram:https://t.me/Python_Math_Community



Labels:

Comments

Post a Comment

Popular posts from this blog

Create Ping Pong Game in Python

  Ping Pong Game: Table tennis , also known as  ping-pong  and  whiff-whaff , is a sport in which two or four players hit a lightweight ball, also known as the ping-pong ball, back and forth across a table using small rackets. The game takes place on a hard table divided by a net. Except for the initial serve, the rules are generally as follows: players must allow a ball played toward them to bounce once on their side of the table and must return it so that it bounces on the opposite side at least once. A point is scored when a player fails to return the ball within the rules. Play is fast and demands quick reactions. Spinning the ball alters its trajectory and limits an opponent's options, giving the hitter a great advantage. We can make it using pygame but I keep it more simple we will create this game using only the turtle module so let's drive into the code without wasting any time Code: # Import required library import turtle # Create screen sc = turtle . Scre...
Post a Comment
Read more

How To Draw BMW Logo - In Python

 I know I don't need to introduce BMW as it is a very popular luxury car. Today we gonna draw the BMW logo in python. I know that you can draw it using a pencil and other tools like AutoCAD etc. But we are programmers we talk with computers so let's tell our computer to draw this logo for use with the help of python. Module The only module we will use is that turtle Code: import turtle as t t.begin_fill() t.fillcolor( '#008ac9' ) for i in range ( 50 ):     t.forward( 4 )     t.left( 2 ) t.right(- 80 ) t.forward( 116 ) t.right(- 90 ) t.forward( 132 ) t.end_fill() t.penup() t.pendown() t.right( 90 ) for i in range ( 50 ):     t.forward( 4 )     t.left(- 2 ) t.right( 80 ) t.forward( 116 ) t.forward(- 116 ) t.right( 90 ) t.begin_fill() t.fillcolor( '#008ac9' ) for j in range ( 45 ):     t.forward(- 4 )     t.left(- 2 ) t.right(- 90 ) t.forward( 116 ) t.end_fill() t.right( 180 ) t.forward( 116 ) t.right( 90 ) for i in ...
Post a Comment
Read more

Draw Minecraft Charater in Python

  Minecraft  is a  sandbox video game  developed by the Swedish video game developer  Mojang Studios . The game was created by  Markus "Notch" Persson  in the  Java programming language . Following several early private testing versions, it was first made public in May 2009 before fully releasing in November 2011, with  Jens Bergensten  then taking over development.  Minecraft  has since been ported to several other platforms and is the  best-selling video game of all time , with over 238 million copies sold and nearly 140 million  monthly active users  as of 2021 . We gonna build a character of Minecraft using our creativity and coding skills so let's drive into the code: Code: import turtle as t def eye ( r , a ):     t . fillcolor ( 'brown' )     t . begin_fill ()     t . circle ( r , a )     t . end_fill () t . begin_fill () t . fillcolor (...
Post a Comment
Read more