HTML, CSS, JS calculator is used for performing basic mathematical operations like Addition, subtraction, multiplication, and division.
Creating a calculator using HTML, CSS, and JavaScript is a fantastic project for aspiring web developers. It allows you to apply and practice your skills in all three core web technologies while building a practical and interactive tool. In this brief overview, we'll explore the main components and steps involved in creating an HTML, CSS, and JavaScript calculator:
HTML Structure:
1.Begin by setting up the basic HTML structure for your calculator. Create containers for the display and buttons.
2.Use <input> or <div> elements to create a display area where the user can see the input and output.
HTML:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>calculator</title>
</head>
<body>
<div class="container">
<h1>welcome our calculator</h1>
<div class="calculator">
<div class="row">
<input type="text" placeholder="0">
</div>
<div class="row">
<button class="button">C</button>
<button class="button">%</button>
<button class="button">00</button>
<button class="button">000</button>
</div>
<div class="row">
<button class="button">7</button>
<button class="button">8</button>
<button class="button">9</button>
<button class="button">*</button>
</div>
<div class="row">
<button class="button">4</button>
<button class="button">5</button>
<button class="button">6</button>
<button class="button">/</button>
</div>
<div class="row">
<button class="button">1</button>
<button class="button">2</button>
<button class="button">3</button>
<button class="button">-</button>
</div>
<div class="row">
<button class="button">0</button>
<button class="button">.</button>
<button class="button">=</button>
<button class="button">+</button>
</div>
</div>
</div>
</body>
</html>
CSS Styling: 1.Apply CSS styles to make your calculator visually appealing. You can use CSS to create button designs, layout, and overall aesthetics.
2.Consider responsive design principles to ensure your calculator looks good on various screen sizes.
CSS:
<style>
*{
margin: 0;
padding: 0;
box-sizing: border-box;
}
.container{
position: relative;
flex-direction: column;
}
h1{
margin: 30px;
text-align: center;
}
.calculator{
text-align: center;
}
.button{
border: 2px solid black;
width: 50px;
height: 7vh;
margin: 10px ;
border-radius: 10px;
box-shadow: 20px black;
cursor: pointer;
background-color: antiquewhite;
color: brown;
font-weight: bold;
font-size: 1.5rem;
}
.row input{
border: 2px black solid;
border-radius: 10px;
padding: 15px 0px;
font-size: 25px;
background-color: rgb(121, 211, 249);
color: rgb(16, 16, 16);
}
</style>
JavaScript Functionality:
1.Implement the logic for your calculator using JavaScript.
2.Create functions for arithmetic operations like addition, subtraction, multiplication, and division. Add event listeners to buttons to capture user input.
3.Update the display with the results of calculations.
JS:
<script>
let string = "";
let buttons = document.querySelectorAll(".button");
Array.from(buttons).forEach((button) => {
button.addEventListener('click', (e)=>{
if(e.target.innerHTML == '=')
{
string = eval(string);
document.querySelector('input').value = string;
}
else if(e.target.innerHTML == 'C')
{
string = "";
document.querySelector('input').value = string;
}
else{
console.log(e.target);
string = string + e.target.innerHTML;
document.querySelector('input').value = string;
}
})
});
</script>
Handling User Input:
1.Ensure that user input is correctly processed. You may need to handle cases like decimal points, clear/reset buttons, and mathematical errors.
2.Implement keyboard support for users who prefer typing their input.
Advanced Features (Optional):
1.Consider adding advanced features like parentheses for complex calculations, memory storage for previous results, or scientific calculator functions.
2.These advanced features can enhance the functionality and user experience of your calculator.
Testing and Debugging:
1.Thoroughly test your calculator in different browsers to ensure cross-browser compatibility. Use browser developer tools and console logging for debugging purposes.
2.Test various mathematical scenarios to verify the accuracy of your calculator's calculations.
Documentation and Comments:
1.Comment your JavaScript code to make it easier for others (or yourself) to understand your implementation.
2.Consider creating a user guide or instructions on how to use your calculator.
Final Thoughts:
Creating an HTML, CSS, and JavaScript calculator is not only a great way to learn web development but also a practical project that you can showcase in your portfolio. It demonstrates your ability to create interactive web applications and solve real-world problems. Plus, it's a valuable tool that you can use for everyday calculations or share with others online. So, roll up your sleeves and start building your own web-based calculator!
Hello everyone this side Debasish If my code is usefull for you then you also comment and share to your friends.
ReplyDelete