Javascript 如何在承诺中包装对象？

我有一个代码，搜索内存存储中的一些数据，如果找不到，则搜索服务器上的数据并将其缓存在内存中。 如何将对象作为承诺返回，以便调用方可以对其调用“done”

代码如下所示：

---

你需要回报一个承诺

if (foundInLocalStorage) {
    var defered = $.Deferred();
    defered.resolve(dataFound);//resolve the promise with the data found
    //or setTimeout(defered.resolve.bind(promise, 5)); if you want to maintain the async nature
    return defered.promise();//return a promise

} else {
    return $.ajax({
        url: someUrl,
        dataType: 'json',
        data: {
            id: 101
        }
    }).done(
    //That part is fine
    ......

    );
}

if (foundInLocalStorage) {
    var defered = $.Deferred();
    defered.resolve(dataFound);//resolve the promise with the data found
    //or setTimeout(defered.resolve.bind(promise, 5)); if you want to maintain the async nature
    return defered.promise();//return a promise

} else {
    return $.ajax({
        url: someUrl,
        dataType: 'json',
        data: {
            id: 101
        }
    }).done(
    //That part is fine
    ......

    );
}