在链接承诺时，通过 onRejected 处理程序处理错误是否算作解决方案？

Question

如果第一个承诺 returns 在错误回调中处理错误，那么在承诺链中是否会出现链式承诺运行？

Promise.all(promises)
    .then(
        () => {
            returnError();
        },
        error => {
            logError();
        })
    .then(
        () => {
            willthisRun();
        }
    );

Answer 1

不，不会，第二个.then不会运行willThisRun()。来自 documentation:

Once a Promise is fulfilled or rejected, the respective handler function (onFulfilled or onRejected) will be called asynchronously (scheduled in the current thread loop). The behavior of the handler function follows a specific set of rules. If a handler function:

returns a value, the promise returned by then gets resolved with the returned value as its value;

doesn't return anything, the promise returned by then gets resolved with an undefined value;

throws an error, the promise returned by then gets rejected with the thrown error as its value;

[...]

第一个 .then 返回的承诺将被（引用）“以抛出的错误作为其值被拒绝”，调用第二个 .then 的 onRejected 处理程序（未定义），这将引发未捕获的异常。

Promise.all(promises)
    .then(
        () => {
            returnError();
        },
        error => {
            // this handler gets called because there is an error
            logError();
        })
    .then(
        // this promise receives the rejection, calling the onrejected argument, which is undefined
        () => {
            willthisRun();
        }
    );

在链接承诺时，通过 onRejected 处理程序处理错误是否算作解决方案？

Does handling an error through an onRejected handler counts as a resolution when chaining promises?

es6-promise