javascript-oop/17-class-private-field.html at main · programmerShinobi/javascript-oop · 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>Class : Private Field</title>
</head>
<body>
    <script>

        class Counter {
            #counter = 0;

            increment() {
                this.#counter++;
            }

            decrement() {
                this.#counter--;
            }

            get() {
                return this.#counter;
            }
        }

        const counter = new Counter();
        counter.increment();
        counter.increment();
        counter.increment();
        counter.increment();
        counter.increment();

        counter.decrement();

        console.info(counter.get());
        // counter.#counter = 100 // ERROR PRIVATE
        console.info(counter)
    </script>
</body>
</html>;