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>Calculadora JS</title>

    <link rel="stylesheet" href="./css/estilo.css">

</head>

<body>

    <form action="" method="post" class="form-login">
        <div class="display">

            <h>Calculadora con js</h>

            <p>
                <label class="label1">Numero 1 </label> <input type="number" name="v1" id="val1" placeholder="valor 1"
                    onblur="captura1()" />

            </p>
            <p>

                <label class="label1">Numero 2 </label><input type="number" name="v2" id="v2" placeholder="valor 2"
                    onblur="captura2()" />

            </p>
        </div>

        <div id="caja">
            <input class="operacion" type="button" value="+" onclick="sum()" />
            <input class="operacion" type="button" value="-" onclick="resta()" />
            <input class="operacion" type="button" value="*" onclick="mul()" />
            <input class="operacion" type="button" value="/" onclick="div()" />
        </div>
        <br>
        <input type="button" value="CA" class="clearCA" onclick="limpiarLista()" />

        <input type="button" value="DEL" id="clearDEL" />

    </form>

    <ul id="resultado">
    </ul>
    <script src="./JS/funciones.js"></script>

</body>

</html>