Change tool-tip direction in react-chartjs2

问题

I have implemented the react-chartjs2 https://www.npmjs.com/package/react-chartjs-2 in my react app. I have implemented it successfully but i need to change the direction of the tooltip when hovering the chart. Currently it looks like this

But i want my tooltip to look like this

How can i achieve this

My code for chart and chart options

const barChartOptions = {
  tooltips: {
    custom: function(tooltip) {
      if (!tooltip) return;
      // disable displaying the color box;
      tooltip.displayColors = false;
    },
    callbacks: {
      // use label callback to return the desired label
      label: function(tooltipItem, data) {
        return tooltipItem.yLabel + " kWh";
      },
      // remove title
      title: function(tooltipItem, data) {
        return;
      }
    }
  },
  responsive: true,
  maintainAspectRatio: false,
  legend: {
    display: false
  },
  scales: {
    xAxes: [
      {
        barPercentage: 1,
        barThickness: 10,
        gridLines: {
          display: false,
          color: "rgba(0, 0, 0, 0.1)"
        }
      }
    ],
    yAxes: [
      {
        gridLines: {
          display: true,
          categorySpacing: 90,
          drawBorder: false,
          color: "rgba(0, 0, 0, 0.1)"
        },
        ticks: {
          beginAtZero: true,
          min: 0,
          max: 100,
          stepSize: 20,
          padding: 20
        }
      }
    ]
  }
};

inside render

<Bar
  data={data}
  width={100}
  height={400}
  options={barChartOptions}
/>

回答1:

I think you need to add more configuration for your tooltip

Check what you can use for position and alignment of your Tooltip

Hope this will help you.Let me know if you have any problem.

回答2:

options: {
    tooltips: {
      yAlign: "bottom"
    }
}

The problem is I don't know a way that the caret is in the middle of your box.

来源：https://stackoverflow.com/questions/58709699/change-tool-tip-direction-in-react-chartjs2