1/* 2 * Copyright (c) 2025 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16print("create promise"); 17let promise = new Promise((resolve,reject) => { 18 resolve("resolve promise") 19}) 20promise.then(result => { 21 print(result); 22}) 23promise.finally(() => { 24 print("execute promise.finally"); 25}) 26 27print("create promise1"); 28let promise1 = new Promise((resolve,reject) => { 29 reject("reject promise1") 30}) 31promise1.catch(error => { 32 print(error); 33}) 34promise1.finally(() => { 35 print("execute promise1.finally"); 36}) 37 38print("create promise2"); 39let promise2 = new Promise((resolve,reject) => { 40 resolve("resolve promise2") 41}) 42 43print("create promise3"); 44let promise3 = new Promise((resolve,reject) => { 45 resolve("resolve promise3") 46}) 47promise2.then(result => { 48 print(result); 49 promise3.then(result => { 50 print(result); 51 }) 52}) 53 54async function test() { 55 print("test start"); 56 await test1(); 57 print("test end"); 58} 59 60async function test1() { 61 print("test1 start"); 62 await test2(); 63 print("test1 end"); 64} 65 66async function test2() { 67 print("test2 start"); 68 await test3(); 69 print("test2 end"); 70} 71 72function test3() { 73 print("execute test3"); 74} 75 76print("execute test"); 77test();