const f1 = () => {
return new Promise((resolve, reject) => {
resolve(1);
});
};
let a = f1()
.then((result) => {
return result + 1;
})
.catch((err) => {});
console.log(a);
Promise {<pending>}
__proto__: Promise
[[PromiseState]]: "fulfilled"
[[PromiseResult]]: 2
想将then里面return的值赋值给一个变量