13af6ab5fSopenharmony_ci/*
23af6ab5fSopenharmony_ci * Copyright (c) 2024 Huawei Device Co., Ltd.
33af6ab5fSopenharmony_ci * Licensed under the Apache License, Version 2.0 (the "License");
43af6ab5fSopenharmony_ci * you may not use this file except in compliance with the License.
53af6ab5fSopenharmony_ci * You may obtain a copy of the License at
63af6ab5fSopenharmony_ci *
73af6ab5fSopenharmony_ci *     http://www.apache.org/licenses/LICENSE-2.0
83af6ab5fSopenharmony_ci *
93af6ab5fSopenharmony_ci * Unless required by applicable law or agreed to in writing, software
103af6ab5fSopenharmony_ci * distributed under the License is distributed on an "AS IS" BASIS,
113af6ab5fSopenharmony_ci * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
123af6ab5fSopenharmony_ci * See the License for the specific language governing permissions and
133af6ab5fSopenharmony_ci * limitations under the License.
143af6ab5fSopenharmony_ci */
153af6ab5fSopenharmony_ci
163af6ab5fSopenharmony_ciclass Car {
173af6ab5fSopenharmony_ci    constructor(brand) {
183af6ab5fSopenharmony_ci        this.carname = brand;
193af6ab5fSopenharmony_ci    }
203af6ab5fSopenharmony_ci    present() {
213af6ab5fSopenharmony_ci        return 'I have a ' + this.carname;
223af6ab5fSopenharmony_ci    }
233af6ab5fSopenharmony_ci}
243af6ab5fSopenharmony_ci
253af6ab5fSopenharmony_ciclass Model extends Car {
263af6ab5fSopenharmony_ci    constructor(brand, mod) {
273af6ab5fSopenharmony_ci        super(brand);
283af6ab5fSopenharmony_ci        this.model = mod;
293af6ab5fSopenharmony_ci    }
303af6ab5fSopenharmony_ci    show() {
313af6ab5fSopenharmony_ci        return this.present() + ', it is a ' + this.model;
323af6ab5fSopenharmony_ci    }
333af6ab5fSopenharmony_ci
343af6ab5fSopenharmony_ci    ["123"]() {  // computed properties
353af6ab5fSopenharmony_ci        return 0;
363af6ab5fSopenharmony_ci    }
373af6ab5fSopenharmony_ci}
383af6ab5fSopenharmony_ci
393af6ab5fSopenharmony_cilet myCar = new Model("Ford", "Mustang");