题目一
Promise.resolve(1)
.then(
value => {
console.log(value);
return 2
}
)
.then(console.log)
题目二
Promise.resolve(1)
.then(
value => {
console.log(value);
return 2
}
)
.then(
value => {
console.log
}
)
题目三
Promise.resolve(1)
.then(
value => {
console.log(value);
return 2
}
)
.then(
value => {
console.log(value)
}
)
题目四
Promise.resolve(1)
.then(2)
.then(Promise.resolve(3))
.then(console.log)