这个问题已经在这里有了答案：            >            How to filter object array based on attributes?                                    11个
我正在尝试遍历包含任务对象数组的对象.我将如何遍历每个键值对,例如返回状态为“已完成”的所有任务.

{
    "quests": [
        {
            "title": "A Rum Deal",
            "status": "COMPLETED",
            "difficulty": 2,
            "members": true,
            "questPoints": 2,
            "userEligible": true
        }
    ],
    "loggedIn": false
}

解决方法:

要进行迭代,您可以使用Array#forEach

object.quests.forEach(function (a) {
    if (a.status === "COMPLETED") {
        // do something with the data
    }
});

要返回已完成任务的选择,可以使用Array#filter

var completed = object.quests.filter(function (a) {
    return a.status === "COMPLETED";
});