/* * Copyright (c) 2022-2023 Huawei Device Co., Ltd. * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ function varDeclaration() { var x = 20; function f(shouldInitialize: boolean) { if (shouldInitialize) { var y = 10; } return y; } f(true); // returns '10' f(false); // returns 'undefined'" var array = [1, 2, 3, 4]; for (var i = 0; i < array.length; i++) console.log(array[i]); for (var j in array) { if (true) { console.log(array[j]); } } for (var e of array) console.log(e); }