Chartjs:在y轴上自定义特定级别的文本

var chartOptions = {
  scales: {
    y: {
      ticks: {
        callback: function(value, index, values) {
          if (value === 0) {
            return "低";
          } else if (value === 50) {
            return "中";
          } else if (value === 100) {
            return "高";
          } else {
            return value;
          }
        }
      }
    }
  }
};

var chartData = {
  labels: ["A", "B", "C", "D", "E"],
  datasets: [{
    label: "数据集",
    data: [50, 75, 100, 25, 0],
    backgroundColor: "rgba(0, 123, 255, 0.5)"
  }]
};

var chart = new Chart(document.getElementById("myChart"), {
  type: "bar",
  data: chartData,
  options: chartOptions
});