Question

更新：我的问题的根源是，我正在通过其uuid向数组分配值。因此，即测验[uuid] = x。因此，数组长度为0，并且该属性显然未在json响应中进行处理。

我正在构建一个函数，在该函数中初始化对象测验并在for循环内对其进行更改。当我完成后，我想兑现诺言。当我调用此函数时，我仅收到初始化值，并且缺少for循环的更改。 console.log（quiz）记录更改的对象。我找不到我的错误...

我尝试了一些if子句，仅在完成for循环时才调用resolve函数。这导致相同的结果或没有响应。

app.get('/playQuiz', function (req, res) {
    playQuiz().then(data => {
        res.status(200).json({
            quiz: data
        });
    });    
});

async function playQuiz(){
    var players = {
        puuids: [],
        stats: []
    }
    credentials = await getCredentials();

    token = credentials.token;
    port = credentials.port;

    players.puuids = await getLobby(port, token);
    for(i=0; i<players.puuids.length; i++){
        players.stats[i] = await getStats(port, token, players.puuids[i])
    }

    let quiz = await evaluateQuiz(players)
    console.log(quiz); // This displays the object quiz with the changes from the loop
    return quiz; //The response i get displayed in Postman from this line, does not show the changes in i.e. csScore. It only shows an empty array.
}

function evaluateQuiz(players){
    return new Promise((resolve, reject) => {
        var quiz = [{
                questionId: 1,
                question: "Who has the most cs per game?",
                csScore: []
            },
            {
                questionId: 2,
                question: "Who has the highest vision score per game?",
                vsScore: []
            },
            {
                questionId: 3,
                question: "Who has the best win rate?",
                winRate: []
            },
            {
                questionId: 4,
                question: "Who has the most quadra kills?",
                quadraKills: []
            },
            {
                questionId: 5,
                question: "Who has the highest objective participation?",
                objectiveRate: []
            }
        ]

        for(var i=0; i<players.puuids.length; i++){
            quiz[0].csScore[players.puuids[i]] = players.stats[i].csScore /    players.stats[i].gamePlayed;
            quiz[1].vsScore[players.puuids[i]] = players.stats[i].visionScore / players.stats[i].gamePlayed;
            quiz[2].winRate[players.puuids[i]] = players.stats[i].victory / players.stats[i].gamePlayed;
            quiz[3].quadraKills[players.puuids[i]] = players.stats[i].quadraKills / players.stats[i].gamePlayed;
            quiz[4].objectiveRate[players.puuids[i]] = players.stats[i].objectiveTakenInvolved / players.stats[i].gamePlayed;
        }
        //console.log(quiz);
        resolve(quiz);        
    })
};

Answer 1

在这种情况下，执行异步处理时会使用Promises和callbacks，因为您所做的只是一个简单的计算，不需要使用promises。

这将是您的代码的解决方案，欢迎使用StackOverflow并祝您编程愉快！

Dim objMyList As ListObject
Dim objWksheet As Worksheet 
Dim strSPServer As String


Const SERVER As String = "https://twdc.sharepoint.com/sites/WDPR-dclrecruiting/Test/TEP/Trip%20Event%20Planning%20Library"
Const LISTNAME As String = "{6B39FDF1-29AE-418C-9D99-92293FED5C81}"
Const VIEWNAME As String = "{CCFD1C7F-74CA-4921-A599-628C800C818A}"

strSPServer = "http://" & SERVER & "/_vti_bin"

Set objWksheet = Worksheets.Add

Set objMyList = objWksheet.ListObjects.Add(xlSrcExternal, _
    Array(strSPServer, LISTNAME, VIEWNAME), False, xlYes, Range("A1"))

阅读文章，以便您更好地了解Promises
的用法

承诺：过早解决返回值

1 个答案: