Question

我试图从API获取数据并在数组中的每个对象上设置fights属性。 API调用可以正常工作，但是无论我尝试使用多少种方法来设置fights属性，该调用都始终为空。

我最初将fights属性设置为null，这是一个空对象，一个数组。什么都没有。我还尝试只设置一个对象属性，而不是遍历每个对象，希望保持简单，可以让我看到损坏的地方。

var sherdog = require('sherdog');

const heavyweight = [
    { "name": "danielcormier", "link": "https://www.sherdog.com/fighter/Daniel-Cormier-52311", "fights": [] },
    { "name": "stipe miocic", "link": "https://www.sherdog.com/fighter/Stipe-Miocic-39537", "fights": [] },
    { "name": "francis ngannou", "link": "https://www.sherdog.com/fighter/Francis-Ngannou-152341", "fights": [] },
    {
      "name": "junior dos santos",
      "link": "https://www.sherdog.com/fighter/Junior-dos-Santos-17272",
      "fights": []
    }
];

for (var i = 0; i < heavyweight.length; i++) {
    sherdog.getFighter(heavyweight[i].link, function (data) {
        heavyweight[i].fights = data['fights'];
    });
}

//试着承诺

function delay(url) {
    // `delay` returns a promise
    return new Promise(function (resolve, reject) {
        // Only `delay` is able to resolve or reject the promise
        sherdog.getFighter(url, function (data) {
            resolve(data);
        });
    });
}

delay(heavyweight[0].link)
    .then(function (v) { // `delay` returns a promise
        console.log(v); // Logs the value once it is resolved
        heavyweight[0].fights = v; // still does not work
    })
    .catch(function (v) {
        // Or do something else if it is rejected 
        console.log("Rejected");
    });

console.log(heavyweight[0].fights);

//尝试过回调

function onComplete(a) {
    heavyweight[0].fights = a.fights;
}

function getFive(whenDone) {
   setTimeout(sherdog.getFighter(heavyweight[0].link, function (data) {
       whenDone(data);
   }), 100000);
}

期望heavyweight[I].fights =从sherdog调用传回的数据。但是结果总是heavyweight[I].fights = [] 我不明白我在想什么。我将不胜感激任何解释，以便将来可以理解此概念。

需要帮助以了解为什么此简单代码无法正常工作

0 个答案: