Chart.js 2.0 (条形图)减少每2条条形图之间的x轴距离

var chartOptions = {
  scales: {
    x: {
      barPercentage: 0.7, // 调整条形图宽度
      categoryPercentage: 0.6 // 调整类别宽度
    }
  }
};

var chartData = {
  labels: ['类别1', '类别2', '类别3', '类别4'],
  datasets: [{
    label: '数据集1',
    data: [10, 20, 30, 40],
    backgroundColor: 'rgba(0, 123, 255, 0.5)'
  }]
};

var chart = new Chart(ctx, {
  type: 'bar',
  data: chartData,
  options: chartOptions
});

var chartOptions = {
  scales: {
    x: {
      barThickness: 20 // 调整条形图宽度
    }
  }
};

var chartData = {
  labels: ['类别1', '类别2', '类别3', '类别4'],
  datasets: [{
    label: '数据集1',
    data: [10, 20, 30, 40],
    backgroundColor: 'rgba(0, 123, 255, 0.5)'
  }]
};

var chart = new Chart(ctx, {
  type: 'bar',
  data: chartData,
  options: chartOptions
});