Question

我试图通过与使用数组表示法相反的对象表示法访问此javascript对象中的金额值。我将如何访问变量。

javascript对象名为： allTargetsData ，其中包含一个名为 originalTarget 的对象，该对象分为：年份，陈列室，月份，如图所示。

以下函数用于访问这些对象，但我对变量的对象表示法：monthTargetData语法错误，因为我试图从数组表示法转换它。

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);
    }
}

我之前通过此声明访问它：

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

Answer 1

您不能因使用变量来访问数据 - 这些不能与点表示法一起使用。关于该行，您唯一可以改变的是amount。它可能是

allTargetsData.originalTarget[requestYear][showrooms[i]][req‌uestMonth].amount

代码中的错误在于此处（不确定是否存在更多错误）

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

我相信如此，因为括号表示将对象视为数组

不，不是，数组没有索引以外的（字符串）键。您永远不会使用something['string']

访问数组元素

JavaScript数组表示法到对象表示法

1 个答案: