獲取對象數組內對象屬性的值

Question

我有對象數組：

var ads = [
{   
    adName: "Football Team",
    adText: ["....","...."],
    adImg: ["images/img1.png", "images/img2.png", "", "", ""],
    adPreviewLink: "templateA",
    adSeconds: 15,
    adTime: ad1Time
},{
    adName: "Basketball Team",
    adText: ["...","..."],
    adImg: ["images/img-b1.png", "images/img-b2.png", "", "", ""],
    adPreviewLink: "templateB",
    adSeconds: 10,
    adTime: ad2Time

}];

adTime屬性也是一個對象：

var ad1Time = {
    hours: ["6","12"],
    day: [weekdaysEnum.monday, weekdaysEnum.wednsday],
    month: [monthEnum.march, monthEnum.april],
    year: 2016,
    daysNumber: []
}

現在我要檢查adTime >> year，但是出現錯誤。

未捕獲的TypeError：無法讀取未定義的屬性“年”

這是我嘗試檢查屬性的方法：

var date = new Date();
var now_day = date.getDate();
var now_month = date.getMonth();
var now_year = date.getFullYear();

for (var i = 0; i < ads.length; i++) {
    if (ads[i].adTime.year == now_year) {
        for(var index_month; index_month < ads[i].adTime.month.length; index_month++)
        {
            if(ads[i].adTime.month[index_month] == now_month)
                console.log(ads[i].adName);
        }
    }

}

那么錯誤在哪里（這里的錯誤是：ads [i] .adTime.year）？ 謝謝。

Answer 1

您需要在“ ads”之前定義“ ad1Time”和“ ad2Time”。