您需要知道如何识别结果中的错误。如果您没有标准的预期错误，我建议您对catch块中的每个错误运行转换，使其在结果中可识别。

try {
  let resArray = await Promise.all(
    state.routes.map(route => route.handler.promiseHandler().catch(e => e))
  );

  // in catch(e => e) you can transform your error to a type or object
  // that makes it easier for you to identify whats an error in resArray
  // e.g. if you expect your err objects to have e.type, you can filter
  // all errors in the array eg
  // let errResponse = resArray.filter(d => d && d.type === '<expected type>')
  // let notNullResponse = resArray.filter(d => d)

  } catch (err) {
    // code related errors
  }

的承诺。用过滤器解决

const promises = [
  fetch('/api-call-1'),
  fetch('/api-call-2'),
  fetch('/api-call-3'),
];
// Imagine some of these requests fail, and some succeed.

const resultFilter = (result, error) => result.filter(i => i.status === (!error ? 'fulfilled' : 'rejected')).map(i => (!error ? i.value : i.reason));

const result = await Promise.allSettled(promises);

const fulfilled = resultFilter(result); // all fulfilled results
const rejected = resultFilter(result, true); // all rejected results

对于那些使用ES8的人来说，你可以使用异步函数做如下的事情:

var arrayOfPromises = state.routes.map(async function(route){
  try {
    return await route.handler.promiseHandler();
  } catch(e) {
    // Do something to handle the error.
    // Errored promises will return whatever you return here (undefined if you don't return anything).
  }
});

var resolvedPromises = await Promise.all(arrayOfPromises);

这就是Promise。一切都是为了工作而设计。如果只有一个promise reject()，整个方法立即失败。

有一些用例可能需要Promise。都是为了让承诺落空。要做到这一点，只需不要在承诺中使用任何reject()语句。然而，为了确保你的应用程序/脚本不会在任何一个底层承诺从未得到响应的情况下冻结，你需要给它设置一个超时。

function getThing(uid,branch){
    return new Promise(function (resolve, reject) {
        xhr.get().then(function(res) {
            if (res) {
                resolve(res);
            } 
            else {
                resolve(null);
            }
            setTimeout(function(){reject('timeout')},10000)
        }).catch(function(error) {
            resolve(null);
        });
    });
}

Promise.allSettled

而不是承诺。都使用Promise。等待所有承诺的解决，不管结果如何

let p1 = new Promise(resolve => resolve("result1")); let p2 = new Promise((resolve,reject) => reject('some trouble ')); let p3 = new Promise(resolve => resolve("result3")); //返回每个promise状态和值的信息 Promise.allSettled ((p1, p2, p3))。然后(结果= > console.log(结果));

Polyfill

if (! promise . allsettle) { const rejectHandler = reason => ({status: 'rejected'， reason}); const resolveHandler = value =>({状态:'已完成'，value}); 的承诺。allsettle =函数(承诺){ const convertedPromises = promises .map(p =>承诺。resolve(p)。然后(resolveHandler rejectHandler)); 返回Promise.all (convertedPromises); }; ｝

使用Async await -

这里一个异步函数func1返回一个解析值，func2抛出一个错误并返回null，在这种情况下，我们可以按照自己的想法处理它并相应地返回。

const callingFunction  = async () => {
    const manyPromises = await Promise.all([func1(), func2()]);
    console.log(manyPromises);
}


const func1 = async () => {
    return 'func1'
}

const func2 = async () => {
    try {
        let x;
        if (!x) throw "x value not present"
    } catch(err) {
       return null
    }
}

callingFunction();

输出是- ['func1'， null]