async function fn1() {
return 1
}
async function fn2() {
return Promise.resolve(1)
}
function fn3() {
return Promise.resolve(1)
}
function fn4() {
return Promise.resolve(Promise.resolve(1))
}
console.log(fn1()); //Promise {<fulfilled>: 1}
console.log(fn2()); // Promise {<pending>}
console.log(fn3()); // Promise {<fulfilled>: 1}
console.log(fn4()); // Promise {<fulfilled>: 1}当我运行 fn2() 时，它输出Promise { pending }.
为什么是 fn2()Promise { pending }而不是Promise {fulfilled: 1}？
javascript ×1