logicaJs/exe4-01.html at master · EMaiaraOliveira/logicaJs · GitHub

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<!DOCTYPE html>
<html>

<head>
    <meta charset='utf-8'>
    <meta http-equiv='X-UA-Compatible' content='IE=edge'>
    <title>Exercicio 04</title>
    <meta name='viewport' content='width=device-width, initial-scale=1'>
    <link rel='stylesheet' type='text/css' media='screen' href='main.css'>
    <script src='main.js'></script>
</head>

<body>
    <script>
        /*
        Operações envolvendo strings e números
        */
        var a = "20";
        var b = a * 2; // b = 40
        var c = a / 2; // c = 10
        var d = a - 2; // d = 18
        var e = a + 2; // e = 202
        var f = Number(a);
        var g = f + 2; // g = 22
        alert("g: " + g); // exibe o valor de uma variável
    </script>
</body>

</html>