cal.github.io/index.html at main · Nursid/cal.github.io · GitHub

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<!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</title>
    <link rel="stylesheet" href="cal.css">
    <script>
        function cal(){
            var num1=document.getElementById('first').value;
            var num2=document.getElementById('second').value;
            var op=document.getElementById('operator').value;
            if(op=='+'){
                var res=parseInt(num1)+parseInt(num2);
            }
            else if(op=='-'){
                var res=parseInt(num1)-parseInt(num2);
            }
            else if(op=='*'){
                var res=parseInt(num1)*parseInt(num2);
            }
            else if(op=='/'){
                var res=parseInt(num1)/parseInt(num2);
            }
            else if(op=='%'){
                var res=parseInt(num1)%parseInt(num2);
            }
         document.getElementById('res').value=res;
        }
    </script>
</head>
<body>
    <div class="container">
        <div class="item">
            <label for="">Enter First Number:
    <input type="number" name="" id="first"></label>
    <br> <br> <br>
    <label for="">Enter Second Number:
    <input type="number" name="" id="second"></label>
    <br><br><br>
    <select name="" id="operator">
        <option value="+">+</option>
        <option value="-">-</option>
        <option value="*">x</option>
        <option value="/">/</option>
        <option value="%">%</option>
    </select>
    <button onclick="cal()">=</button>
    <input type="text" name="" id="res">
</div>
</div>
</body>
</html>