20-class-operator-instanceof-inheritance.html

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    <meta charset="UTF-8">
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    <title>Class : Operator instanceof  Inheritance</title>
</head>
<body>
    <script>

        class Employee {

        }

        class Manager extends Employee{

        }

        const faqih = new Employee();
        const fityra = new Manager();

        console.info(typeof faqih);
        console.info(typeof fityra);

        console.info(faqih instanceof Employee); //true
        console.info(faqih instanceof Manager); //false

        // true karena Manager adalah turuan dari Employee
        console.info(fityra instanceof Employee); //false
        console.info(fityra instanceof Manager) //true

    </script>
</body>
</html>