ngOnInit(): void {
var myChart = new Chart('myChart', {
  type: 'bar',
  data: {
    labels: ['Recordings'],
    datasets: [
      {
        label: 'A',
        data: [this.data.a],
        borderColor: 'rgba(255,105,180,1)',
        backgroundColor: 'rgba(255,105,180,0.2)',
        barPercentage:0.4,
        borderWidth:2,
        order: 1
      },
      {
        label: 'B',
        data: [this.data.b],
        borderColor: 'rgba(75, 192, 192, 1)',
        backgroundColor: 'rgba(75, 192, 192, 0.2)',
        barPercentage:0.4,
        borderWidth:2,
        order: 2
      },
      {
        label: 'Total Recordings',
        data:[this.data.totalrecordings],
        type:'line',
        borderColor:'rgba(2,117,216,1)',
        backgroundColor:'rgba(2,117,216,0.2)',
        order:0
      }
    ]
  },
  options: {
    responsive: true,
    plugins: {
      legend: {
        position: 'top',
      }
    }
  },
})
}

我希望总记录折线图应该是一条水平直线，当我将鼠标悬停在该直线上时，它应该显示总记录值。现在，该图正在绘制，如图所示。