始终显示数据值图表栏和Pie Chart.js

Question

我有图表，我想始终显示数据值（工具提示）。

我尝试了以下代码： https : //github.com/chartjs/Chart.js/issues/1861，但始终无法正常工作。

这是我的代码：

var PieData = [
    {
        value: <?php echo $sumguide; ?>,
color:"#0a0fff",
    label: "Guide"
},
{
    value: <?php echo $sumvisit; ?>,
    color:"#53ff28",
        label: "Visit"
},
{
    value: <?php echo $sumremote; ?>,
    color:"#ff0d00",
        label: "Remote"
}];
var pieOptions = {
    segmentShowStroke: true,
    segmentStrokeColor: "#fff",
    segmentStrokeWidth: 1,
    percentageInnerCutout: 50,
    animationSteps: 100,
    animationEasing: "easeOutBounce",
    animateRotate: true,
    animateScale: true,
    responsive: true,
    maintainAspectRatio: false
};

var pieChartCanvas = $("#pieChart2").get(0).getContext("2d");
var pieChart2 = new Chart(pieChartCanvas).Doughnut(PieData, pieOptions);
document.getElementById('js-legend2').innerHTML = pieChart2.generateLegend();