js类的get和set特性

        class ClassWithGetSet {
            #msg = 'hello world';
            get msg() {
                // return this.#msg;
                return this.#msg.replace(/w[a-z]+/,'jackal');
            }
            set msg(x) {
                this.#msg = `hello ${x}`;
            }
        }

        const instance = new ClassWithGetSet();
        console.log(instance.msg);
        // expected output: "hello jackal"

        instance.msg = 'cake';
        console.log(instance.msg);
        // 预期输出值: "hello cake"

这就class中的特性与Object.defineProperty类似