To design a web application for a standard calculator with minimum five operations.
Clone the github repository and create Django admin interface.
Change settings.py file to allow request from all hosts.
Use CSS for creating attractive colors.
Write JavaScript program for implementing five different operations.
Validate the HTML and CSS code.
Publish the website in the given URL.
<html>
<head>
<title>Calculator</title>
<link rel="stylesheet" href="cal.css">
</head>
<body>
<div id="cal">
<input id="display" readonly>
<div id="key">
<button onclick="appendToDisplay('+')" class="operator-btn">+</button>
<button onclick="appendToDisplay('7')" >7</button>
<button onclick="appendToDisplay('8')" >8</button>
<button onclick="appendToDisplay('9')" >9</button>
<button onclick="appendToDisplay('-')" class="operator-btn">-</button>
<button onclick="appendToDisplay('4')" >4</button>
<button onclick="appendToDisplay('5')" >5</button>
<button onclick="appendToDisplay('6')" >6</button>
<button onclick="appendToDisplay('*')" class="operator-btn">*</button>
<button onclick="appendToDisplay('1')" >1</button>
<button onclick="appendToDisplay('2')" >2</button>
<button onclick="appendToDisplay('3')" >3</button>
<button onclick="appendToDisplay('/')" class="operator-btn">/</button>
<button onclick="appendToDisplay('0')" >0</button>
<button onclick="appendToDisplay('.')" >.</button>
<button onclick="calculate()" >=</button>
<button onclick="clearDisplay()" class="operator-btn">C</button>
</div>
</div>
<script src="cal.js"></script>
</body>
</html>
button
{
width: 100px;
height: 100px;
border-radius: 50px;
border: none;
background-color: hsl(0, 0%,30%);
color: white;
font-size: 3rem;
font-weight: bold;
cursor: pointer;
}
button:hover
{
background-color:orangered;
transition: 2s;
}
button:active{
background-color: red;
}
#key
{
display: grid;
grid-template-columns: repeat(4,1fr);
gap: 10px;
padding: 25px;
}
#cal
{
font-family: 'Times New Roman';
background-color: red;
border-radius: 20px;
max-width: 470px;
overflow: hidden;
color: black;
}
#display
{
width: 100%;
padding: 20px;
font-size: 5rem;
text-align: left;
border: none;
background-color:hsl(0, 0%,20%);
color: rgb(121, 42, 42);
}
body
{
margin: 0;
display: flex;
justify-content: center;
align-items: center;
height: 100vh;
background-color:white
;
}
.operator-btn{
background-color: hsl(39,100%,50%);
}
.operator-btn:hover{
background-color: hsl(39,100%,65%);
}
.operator-btn:active{
background-color: hsl(39,100%,75%);
}
var display=document.getElementById("display")
function appendToDisplay(input)
{
display.value+=input
}
function cleardisplay()
{
display.value="";
}
function calculate()
{
try{
display.value=eval(display.value);
}
catch(error)
{
display.value="Error";
}
}
The program for designing a standard calculator using HTML and CSS is executed successfully.
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