JavaScript數組符號到對象符號

Question

我正在嘗試通過對象表示法（而不是使用數組表示法）訪問此javascript對象中的金額值。 我將如何訪問變量。

javascript對象稱為： allTargetsData ，其中包含一個名為originalTarget的對象，該對象分為：Year，showroom，month，如圖所示。

以下函數用於訪問這些對象，但是我的變量符號表示法：monthTargetData在語法上存在漏洞，因為我正試圖從數組符號轉換它。

function printFullReport(){
    var requestYear = $('#changeYear').val();
    var requestMonth = parseInt($('#changeMonth').val());

    var url = '/fpdf/requests/print_fullreport1.php?year=' + requestYear + '&month=' + getMonth(requestMonth);

    console.log(allTargetsData);
    //var showroomNo = 29;
    var showrooms = [1, 3, 4, 24, 27, 29, 34, 36, 37, 8, 21, 25, 26, 28, 31, 33, -1];
    for (var i = 0; i <showrooms.length; i++){

        var showroomData = allTargetsData.monthlyDetail[showrooms[i]];
        var lastYear = allTargetsData.realFigure.requestYear - 1;

        var showroomname = showroomData.showroom_name;
        var monthActualData = showroomData.total;
        var monthTargetData = allTargetsData.originalTarget.requestYear.[showrooms[i]].requestMonth.amount;
        var priorYearData = JSON.stringify(allTargetsData.realFigure[requestYear - 1][showrooms[i]]['figures'][requestMonth]);
        var priorYearToDateData = showroomData.ly_ytd;
        var yearToDateTargetData = showroomData.ytd_target;
        var yearToDateActualData = showroomData.ytd;

        var calculation1 = showroomData.ytd - showroomData.ly_ytd;
        var YTDVsPYTDSalesCurrencyData = Math.round(calculation1*10000)/100;

        var calculation2 = parseFloat(showroomData.ytd - showroomData.ly_ytd)/showroomData.ly_ytd;
        var YTDVsPYTDSalesinPercentData = Math.round(calculation2*10000)/100;

        var calculation3 = showroomData.ytd - showroomData.ytd_target;
        var YTDVsYTDTargetinSalesCurrencyData = Math.round(calculation3*100)/100;

        var calculation4 = parseFloat(showroomData.ytd - showroomData.ytd_target)/parseFloat(showroomData.ytd_target);
        var YTDVsYTDTargetinPercentData = Math.round(calculation4*10000)/100;
        console.log(showroomname);
    }
}

我以前通過此聲明訪問它：

var monthTargetData = JSON.stringify(allTargetsData.originalTarget[requestYear][showrooms[i]][requestMonth]['amount']);

Answer 1

由於使用變量來訪問數據，您不能這樣做-不能與點符號一起使用。 關於該行，您唯一可以更改的是amount 。 它可能是

allTargetsData.originalTarget[requestYear][showrooms[i]][req‌​uestMonth].amount

您代碼中的錯誤就在這里（不確定這些錯誤是否更多）

allTargetsData.originalTarget.requestYear.[showrooms[i]].requestMonth.amount;
                                        ^^^ dot and bracket notation doesn't work

我相信是這樣，因為括號表示法將對象視為數組

不，不是，數組除索引外沒有其他（字符串）鍵。 您將永遠無法使用something['string']訪問數組元素