Javascript 从JSON对象获取数组

我有一个JSON对象：

var Events = {
"Jan" : [],
"Feb" : [],
"Mar" : {
    "23" : [
        {"eventName" : "Start", "eventYear" : 2015, "eventDescription" : "First event description"},
        {"eventName" : "Start 2", "eventYear" : 2016, "eventDescription" : "Second event description"},
        {"eventName" : "Start 3", "eventYear" : 2017, "eventDescription" : "Third event description"}
    ],
    "24" : [
        {"eventName" : "Start", "eventYear" : 2015, "eventDescription" : "First event description for 24"},
        {"eventName" : "Start 2", "eventYear" : 2016, "eventDescription" : "Second event description for 24"}
    ]
},
"Apr" : [],
"May" : [],
"Jun" : [],
"Jul" : [],
"Aug" : [],
"Sep" : [],
"Oct" : [],
"Nov" : [],
"Dec" : []
}

我正在尝试获取当月的事件数组：

window.addEventListener('DOMContentLoaded', init);
var date, month_names_short, thisMonthEvents;
function init(){
    date = new Date();
    month_names_short = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'];
    thisMonthEvents = Events.month_names_short[date.getMonth()];
};

但我收到以下错误类型错误：无法读取此行的未定义属性“2”：

thisMonthEvents = Events.month_names_short[date.getMonth()];

---

我做错了什么？如何修复它？

如果您确实计划使用月名短数组，您可以执行以下操作：

function init(){
    date = new Date();
    month_names_short = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'];
    for (var index in month_names_short) {
         var month = month_names_short[index];
         thisMonthEvents = Events[month];
    }
};

---

首先，您需要通过索引在month_names_short数组中查找月份名称。然后使用和找到的名称可以访问相应的事件：

function init() {
    date = new Date();
    month_names_short = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'];
    thisMonthEvents = Events[month_names_short[date.getMonth()]];
};

使用[]而不是。捐赠

---

您的意思是thisMonthEvents=Events[month\u names\u short[date.getMonth]]？您是否尝试过使用getJSONArray和setJSONArray？month\u names\u short不是的属性Events@nnnnnn是的，这就是我需要的，谢谢！你能把它贴出来作为答案吗？这样我就可以接受了？

window.addEventListener('DOMContentLoaded', init);
var date, month_names_short, thisMonthEvents;
function init(){
    date = new Date();
    month_names_short = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'];
    thisMonthEvents = Events[month_names_short[date.getMonth()]];
};