Promise.resolve()
.then(() => {
console.log(1);
return Promise.resolve(2);
})
.then((val) => {
console.log(val);
});
Promise.resolve()
.then(() => {
console.log(3);
})
.then(() => {
console.log(4);
})
.then(() => {
console.log(5);
}); Promise.resolve()
.then(() => {
console.log(1);
return Promise.resolve(2);
})
.then((val) => {
console.log(val);
});
Promise.resolve()
.then(() => {
console.log(3);
})
.then(() => {
console.log(4);
})
.then(() => {
console.log(5);
}); 1 3 2 4 5
1 3 4 2 5
1 3 4 5 2
1 2 3 4 5

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