promise 代码题

1 多次resolve

2 consloe 在resolve之后

3 返回reject

4 catch后面加一个then的链式调用

5 then里面的 return 2成了resolve(2)

快手

setTimout(() => {
    console.log(1)
}, 0);
console.log(2);

const p0 = new Promise((resolve,reject) => {
    console.log(3)
    resolve(4)
}).then(() => console.log(4));
// p0.then()
console.log(5);


const p1 = p0.then(() => Promise.reject(6));
p1.catch(res => console.log(res));