javascript_calculator/calc.html at master · deep-sangani/javascript_calculator · 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">
    <link rel="stylesheet" href="style.css">
    <title>calculator</title>
</head>
<body>
    <script>

        function display(value){
            document.getElementById("display").value+=value;

        }

        function cleardisplay(){
            console.log("clear");
            document.getElementById("display").value=0
        }
        function evaldisplay(){
            let str = document.getElementById("display").value
            console.log(str);
            let r = eval(str);
            document.getElementById("display").value=r
            console.log(r);


        }
    </script>
    <div class="main">
        <div class="calc-body">
            <input class="display" placeholder="0"  id="display"/>


            <div class="keys">

                 <div class="row">
                <button onclick="display('7')" #20353d class="key">7</button>
                 <button onclick="display('8')"  class="key color">8</button>
                  <button onclick="display('9')"   class="key color">9</button>
                  <button onclick="display('/')"   class="key color">/</button>
                </div>
                <div class="row">
                    <button onclick="display('4')"   class="key">4</button>
                 <button onclick="display('5')"   class="key color">5</button>
                  <button onclick="display('6')"   class="key">6</button>
                  <button onclick="display('*')"  class="key">*</button>
                </div>
                <div class="row">
                    <button onclick="display('1')"   class="key">1</button>
                 <button onclick="display('2')" class="key color ">2</button>
                  <button onclick="display('3')" class="key color">3</button>
                  <button onclick="display('-')" class="key color">-</button>
                </div>
                <div class="row">
                    <button onclick="display('0')" class="key">0</button>
                 <button onclick="display('.')" class="key">.</button>
                  <button class="key" onclick="cleardisplay()">C</button>
                  <button onclick="display('+')" class="key color">+</button>
                </div>
                <div class="row">
                    <button class="key color" onclick="evaldisplay()" style="width: 100%;text-align: center;">=</button>
                </div>

            </div>
        </div>
    </div>
</body>
</html>