promise的输出题： const p1 = () => (new Promise((resolve, reject) => { console.log(1); let p2 = new Promise((resolve, reject) => { console.log(2); const timeOut1 = setTimeout(() => { console.log(3); resolve(4); }, 0) resolve(5); }); resolve(6); p2.then((arg) => { console.log(arg); }); })); const timeOut2 = setTimeout(() => { console.log(8); const p3 = new Promise(reject => { reject(9); }).then(res => { console.log(res) }) }, 0) p1().then((arg) => { console.log(arg); }); console.log(10); //答案是1 2 10 5 6 8 9 3