Javascript：无法console.log某些对象

Question

很难理解为什么某些对象无法正常返回：

如果我运行console.log(obj.R)，它会按预期返回“不同”。如果我运行console.log(obj.g)，则只返回undefined。我的目标是返回g对象的第一个值，例如console.log(obj.g[0])，并返回值“0.04600”。

按要求提供全部功能：

function buildCandleStickChart_() {
      CurrencyDataService.getChartData('BTC', vm_.selectedMarket).
          then(function(data) {

            // Set a default theme for the entire chart.
            anychart.theme({
              'defaultFontSettings': {
                'fontSize': 12,
                'fontFamily': 'Roboto'
              }
            });

            var table = anychart.data.table();

            // Map API data to table data.
            dataArray = data.response.map(function(obj) {

              // Format Date
              var formatedDate = moment(obj.time * 1000).format('M-D HH:mm');
              return [formatedDate, obj.open, obj.high, obj.low, obj.close, obj.volumeto];
            });

            // Add API data to table.
            table.addData(dataArray);

            // Map data to candlesticks.
            var mapping = table.mapAs();
            mapping.addField('open', 1, 'first');
            mapping.addField('high', 2, 'max');
            mapping.addField('low', 3, 'min');
            mapping.addField('close', 4, 'last');

            // Map data to volume bars.
            var volMapping = table.mapAs();
            volMapping.addField('value', 5);

            // Get current lowest price.
            var getLowestValue = _.minBy(data.response, 'low');
            lowestLow = getLowestValue.low;
            // Get current highest price.
            var getHighestValue = _.maxBy(data.response, 'high');
            highestHigh = getHighestValue.high;

            // Scale down the volume bars.
            var getHighestVolume = _.maxBy(data.response, 'volumeto');
            var highestVolume = getHighestVolume.volumeto;
            var getLowestVolume = _.minBy(data.response, 'volumeto');
            var lowestVolume = getLowestVolume.volumeto;

            // Initialize the chart.
            var chart = anychart.stock();
            candleStickChartRef = chart;
            candleStickPlotRef = chart.plot(0);

            // Initialize the candlesticks.
            var candleSticks = chart.plot(0).candlestick(mapping);
            candleSticks.name(vm_.selectedMarket);

            // Toggle chart tooltip
            chart.tooltip(false);

            // Chart Padding
            var padding = chart.padding();
            padding.bottom(0);
            padding.left(0);
            padding.right(88);
            padding.top(0);

            // Chart Margins
            var margin = chart.margin();
            margin.bottom(-1);
            margin.left(0);
            margin.top(-1);
            margin.right(0);

            // Create custom date time scale.
            var dateTimeScale = anychart.scales.dateTime();
            var dateTimeTicks = dateTimeScale.ticks();
            dateTimeTicks.interval(0, 0, 0, 1);

            // Style the X-Axis.
            var xAxis = chart.plot(0).xAxis();
            xAxis.background('#FFFFFF');
            xAxis.height(24);
            xAxis.enabled(true);

            // Adjust axis labels.
            var labels = xAxis.labels();
            labels.format(function(value) {
              var date = new Date(value.tickValue);
              var formattedDate = moment(date).format('MMM DD, HH:mm');
              return formattedDate;
            });
            labels.width(118);

            // Apply date time scale.
            var scale = chart.xScale();
            scale.ticks([{major: {unit: 'minute', count: 15}, minor: {unit: 'second', count: 1}}]);

            // Declare the Y-Axis scale.
            var yScale = chart.plot(0).yScale();

            // Set the position of the Y-Axis values.
            var yAxis = chart.plot(0).yAxis(0);
            yAxis.orientation('right');
            yAxis.drawFirstLabel(true);
            yAxis.drawLastLabel(false);

            // Set the position of the Y-Axis labels.
            var yLabels = chart.plot(0).yAxis().labels();
            yLabels.offsetX(0);
            yLabels.format(function() {
              return this.value.toFixed(vm_.currencySettings[vm_.selectedMarket].decimal);
            });

            console.log(chart.plot(0).yAxis().labels());

            // Horizontal Grid Lines.
            chart.plot(0).yGrid().enabled(true);
            chart.plot(0).yGrid().stroke('#ced4da', 1);

            // Enable current price indicator.
            var indicator = chart.plot(0).priceIndicator();
            // Set line settings.
            indicator.value('last-visible');
            indicator.fallingStroke('#ff6b6b');
            indicator.fallingLabel({background: '#ff6b6b'});
            indicator.risingStroke('#20c997');
            indicator.risingLabel({background: '#20c997'});
            indicator.label().fontColor('White');
            indicator.label().fontFamily('Roboto');

            // Initialize the volume bars.
            var volumeBars = chart.plot(0);
            var volume = volumeBars.column(volMapping).name('Volume');
            volume.zIndex(1);

            // Create and tune Y-Scale for volume bars.
            var extraYScale = anychart.scales.linear();
            extraYScale.maximum(highestVolume + (highestVolume * 4));
            extraYScale.minimum(lowestVolume);
            volume.yScale(extraYScale);

            // Enable Legend.
            var legend = chart.plot(0).legend();
            legend.enabled(false);
            // Set legend position.
            legend.positionMode('inside');
            // Style legend.
            legend.position('top');
            legend.align('left');
            legend.background().enabled(true);
            legend.background().fill('#fff', 0.87);
            legend.background().stroke('#ced4da', 1);
            legend.padding(8);
            legend.margin(8);
            legend.drag(true);

            // Set listener on the chart container.
            document.getElementById('chart-left').onclick = function(event) {
              mouseHoverHandler_(event);
            };

            // Event handler to get Y-Axis value on click.
            function mouseHoverHandler_(event) {
              // X click coordinate on plot.
              var y = event.offsetY;
              // Plot bounds related to chart container.
              var plotHeight = chart.plot(0).yAxis().getPixelBounds().height;
              // Plot left margin
              var plotTopoffset = chart.plot(0).yAxis().getPixelBounds().top;
              // Click on data area.
              if (y < plotTopoffset || y > plotTopoffset + plotHeight) {
                return;
              }

              // Get value of click related to yScale.
              var ratio = (y - plotTopoffset) / plotHeight;
              var value = (yScale.inverseTransform(1 - ratio)).toFixed(8);

              // Setting this value triggers watch which will build line.
              vm_.chartSelectedSwapRate = parseFloat(value);
            }

            // Customize the crosshair and yLabel.
            chart.crosshair(true);
            chart.crosshair().xLabel(false);
            chart.crosshair().yLabel().format(function() {
              return Number(this.value).toFixed(8);
            });
            chart.crosshair().xStroke(null);
            chart.crosshair().yStroke('#212529', 1);
            chart.crosshair().yLabel().fontColor('#fff');
            chart.crosshair().yLabel().fontSize(12);
            chart.crosshair().yLabel().padding(2);
            chart.crosshair().yLabel().hAlign('center');
            chart.crosshair().yLabel().width(78);
            chart.crosshair().yLabel().fontFamily('Roboto');
            chart.crosshair().yLabel().background({
              fill: '#212529',
              stroke: '#212529'
            });

            // Toggle the timeline scroller.
            chart.scroller().enabled(false);

            // Configure the visual settings of the falling candlesticks.
            candleSticks.fallingFill('#ff6b6b');
            candleSticks.fallingStroke('#ff6b6b', 1, '0', 'round');

            // Configure the visual settings of the rising candlesticks.
            candleSticks.risingFill('#20c997');
            candleSticks.risingStroke('#20c997', 1, '0', 'round');

            // Configure the visual settings of the volume bars.
            volume.normal().fill('#e9ecef');

            // Set the width of candlesticks and volume bars.
            chart.plot(0).pointWidth(6);

            // Toggle the default contextual menu.
            chart.contextMenu(false);

            // Enable the custom contextual menu.
            // var customContextMenu = anychart.ui.contextMenu();

            // Build the custom contextual menu.
            // (TODO)jberthelot: Connect these menu actions with the Go Long and Go Short sidebar
            //                   functions.

            // customContextMenu.attach(chart);
            // customContextMenu.itemsFormatter(function(items) {
            //   items = {
            //     'menu-item-1': {
            //       'text': 'Create a Long Cryptoswap',
            //       'action': function() {
            //         alert('You are going Long!');
            //       }
            //     },
            //     'menu-item-2': {
            //       'text': 'Create a Short Cryptoswap',
            //       'action': function() {
            //         alert('You are going Short!');
            //       }
            //     }
            //   };
            //   return items;
            // });

            // Add a custom class name to the contextual menu for easier styling.
            // customContextMenu.addClassName('custom-context-menu');

            // Set the candlestick chart container element.
            chart.container('chart-left');

            // Initiate the candlestick chart display.
            if (vm_.chart) {
              vm_.chart.dispose();
            }
            vm_.chart = chart;
            chart.draw();
          });
    }