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
PROGRAM:
<title>Calculator</title> <div class="calculator">
<input type="text" name="screen" id="screen">
<table>
<tr>
<td><button>(</button></td>
<td><button>)</button></td>
<td><button>C</button></td>
<td><button>%</button></td>
</tr>
<tr>
<td><button>7</button></td>
<td><button>8</button></td>
<td><button>9</button></td>
<td><button>X</button></td>
</tr>
<tr>
<td><button>4</button></td>
<td><button>5</button></td>
<td><button>6</button></td>
<td><button>-</button></td>
</tr>
<tr>
<td><button>1</button></td>
<td><button>2</button></td>
<td><button>3</button></td>
<td><button>+</button></td>
</tr>
<tr>
<td><button>0</button></td>
<td><button>.</button></td>
<td><button>/</button></td>
<td><button>=</button></td>
</tr>
</table>
</div>
</div>
style.css
.container{ text-align: center; margin-top:23px }
table{ margin: auto; }
input{ border-radius: 21px; border: 5px solid #53e236; font-size:34px; height: 65px; width: 456px; }
button{ border-radius: 20px; font-size: 40px; background: whitesmoke; width: 102px; height: 90px; margin: 6px; }
.calculator{ border: 4px solid #d61a13; background-color: #1170ec ; padding: 23px; border-radius: 53px; display: inline-block;
}
h1{ font-size: 28px; font-family: 'Courier New', Courier, monospace; }
index.js
let screen = document.getElementById('screen'); buttons = document.querySelectorAll('button'); let screenValue = ''; for (item of buttons) { item.addEventListener('click', (e) => { buttonText = e.target.innerText; console.log('Button text is ', buttonText); if (buttonText == 'X') { buttonText = '*'; screenValue += buttonText; screen.value = screenValue; } else if (buttonText == 'C') { screenValue = ""; screen.value = screenValue; } else if (buttonText == '=') { screen.value = eval(screenValue); } else { screenValue += buttonText; screen.value = screenValue; }
})
}
The program for designing a standard calculator using HTML and CSS is executed successfully.
React
Typescript
Django
Laravel
Facebook
Microsoft
Google
Alibaba
D3
Tencent