Chart. JS multitooltip tag - chart js multiTooltip labels

problem ：

I'm trying to get charts.js to display the label name from each dataset in the tooltip. I'm trying to use charts.js To display the label name of each dataset in the tooltip .

My code: My code ：

var barChartData = {    labels : ["January","February","March","April","May","June","July"],    datasets : [        {            label: "Bob",            fillColor : "rgba(88,196,246,0.5)",            strokeColor : "rgba(88,196,246,0.8)",            highlightFill: "rgba(88,196,246,0.75)",            highlightStroke: "rgba(88,196,246,1)",            data : [randomScalingFactor(),randomScalingFactor(),randomScalingFactor(),randomScalingFactor(),randomScalingFactor(),randomScalingFactor(),randomScalingFactor()]        },        {            label: "Tina",            fillColor : "rgba(74,211,97,0.5)",            strokeColor : "rgba(74,211,97,0.8)",            highlightFill : "rgba(74,211,97,0.75)",            highlightStroke : "rgba(74,211,97,1)",            data : [randomScalingFactor(),randomScalingFactor(),randomScalingFactor(),randomScalingFactor(),randomScalingFactor(),randomScalingFactor(),randomScalingFactor()]        }    ]}var ctx = document.getElementById("canvas").getContext("2d");window.myBar = new Chart(ctx).Line(barChartData, {    responsive : true,    animation: true,    barValueSpacing : 5,    barDatasetSpacing : 1,    tooltipFillColor: "rgba(0,0,0,0.8)",                    multiTooltipTemplate: "<%= label %> - <%= value %>"});

With my above code the tooltip when hovering above "January" displays: Use the code above , When hovering over “1 month ” Above , The tooltip displays ：

JanuaryJanuary - xxJanuary - xx

Any ideas how I can get it to display the following? Any idea how can I make it show the following ？

JanuaryBob - xxTina - xx

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Solution ：

Reference resources ： https://stackoom.com/en/question/1eqF4