Calculator | UI Design | Free Projects1

☆ In this project, we can solve basic arithmetic calculations e.g. addition, subtraction, multiplication, and division.

☆ It is a calculator UI design. and source code freely available on our website FreeProjects1 and our official GitHub page.

☆ It is free to open source projects, and source code is freely available on our GitHub page.

How to use

☆ For addition, press the first number then the plus operator(+), and then the second number, and then press the equal button to get the output.

☆ For subtraction, press the first number then the subtract or minus operator(-), and then the second number, and then press the equal button to get the output.

☆ For Multiplication, press the first number then the multiply operator(*), and then the second number, and then press the equal button to get the output.

☆ For division, press the first number then the division operator(/), and then the second number, and then press the equal button to get output.

☆ This project is responsive means it successfully works in mobile and desktop both versions.

☆ Used languages are HTML, CSS, and JavaScript.

Project Source Code:

1. index.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title> Calculator | UI Design | Free Projects1 </title>
    <meta name="keywords" content="Bholu Singh, bholu singh github, FreeProjects1.blogspot.com">
    <meta name="description" content="In this project, we can solve the basic arithmetic calculations e.g. addition, subtraction, multiplication, and division..">
    <link rel="shortcut icon" href="favicon.png" type="image/x-icon">
    <link rel="stylesheet" type="text/css" href="style.css">
</head>

<body>
    <div class="container">
        <form class="calculator" name="calc">
            <input type="text" id="value" class="value" name="txt" readonly />
            <span class="num clear" onclick="calc.txt.value = '' ">AC</span>
            <span class="num" onclick="document.calc.txt.value += '/' ">/</span>
            <span class="num" onclick="document.calc.txt.value += '*' ">*</span>
            <span class="num" onclick="document.calc.txt.value += '7' ">7</span>
            <span class="num" onclick="document.calc.txt.value += '8' ">8</span>
            <span class="num" onclick="document.calc.txt.value += '9' ">9</span>
            <span class="num" onclick="document.calc.txt.value += '-' ">-</span>
            <span class="num" onclick="document.calc.txt.value += '4' ">4</span>
            <span class="num" onclick="document.calc.txt.value += '5' ">5</span>
            <span class="num" onclick="document.calc.txt.value += '6' ">6</span>
            <span class="num plus" onclick="document.calc.txt.value += '+' ">+</span>
            <span class="num" onclick="document.calc.txt.value += '1' ">1</span>
            <span class="num" onclick="document.calc.txt.value += '2' ">2</span>
            <span class="num" onclick="document.calc.txt.value += '3' ">3</span>
            <span class="num" onclick="document.calc.txt.value += '0' ">0</span>
            <span class="num" onclick="document.calc.txt.value += '.' ">.</span>
            <span class="num" onclick="del();">Del</span>
            <span class="num equal" onclick="document.calc.txt.value = eval(calc.txt.value)">=</span>
        </form>
    </div>

    <script type="text/javascript">
        function del()
        {
           var prevalue = calc.txt.value;
           calc.txt.value = prevalue.substr(0,prevalue.length-1);
        }
    </script>
</body>
</html> 

2. style.css

@import url('https://fonts.googleapis.com/css2?family=Quicksand:wght@300;400;500;&display=swap');

*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body{
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}
.container{
    position: relative;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 6px;
    overflow: hidden;
    z-index: 10;
    backdrop-filter: blur(15px);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    border-left: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 5px 5px 30px rgba(0, 0, 0, 0.2);
}
form{
    margin: 5px;
}
.container .calculator{
    position: relative;
    display: grid;
}

.container .calculator .value{
    grid-column: span 4;
    width: 311px;
    height: 120px;
    text-align: right;
    border: none;
    outline: none;
    padding: 10px;
    font-size: 30px;
    margin-bottom: 5px;
    background: transparent;
    box-shadow: inset 0 0 18px rgba(0, 0, 0, 0.1);
}
.container .calculator span{
    display: grid;
    place-items: center;
    width: 72px;
    height: 72px;
    font-weight: 400;
    cursor: pointer;
    font-size: 20px;
    user-select: none;
    margin: 3px;
    border-radius: 20%;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    transition: 0.5s;
}
.container .calculator span:hover{
    transition: 0s;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.2);
    background: rgba(0, 0, 0, 0.05);
}
.container .calculator span:active{
    background: lightgreen;
    color: #192f00;
    font-size: 24px;
    font-weight: 500;
}
.container .calculator .clear{
    grid-column: span 2;
    width: 150px;
    background: rgba(255, 255, 255, 0.05);
}
.container .calculator .plus{
    grid-row: span 2;
    height: 150px;
}
.equal{
    background: rgba(255, 255, 255, 0.05);
}

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Calculator | UI Design | Free Projects1