series : [{
  name: '检查数',
  type: 'bar',
  itemStyle: {
    normal: {
      color: function(params) {
        var colorList = ['#f00', '#0f0', '#ff0', '#00f',];
        return colorList[params.dataIndex]
      },
    }
  },
  barWidth: '45%',
  data:[100,80,120,170]
}]