圆环效果示例

代码如下

storageStaChart() {
      let color = ['#009976','#15E6B5']
      let charts = echarts.init(document.getElementById('storageStaChart'));
      let option = this.getPieOption(color);
      charts.setOption(option, true);
    },
getPieOption(color) {
      let data = [];
      data.push(
        {
          value: 39,
          name: '已使用',
          itemStyle: {
            normal: {
              borderWidth: 5,
              shadowBlur: 5,
              borderColor: {
                type: 'linear',
                colorStops: [
                  { offset: 0, color: color[0] },
                  { offset: 1, color: color[1] }
                ]
              },
              shadowColor: '#00ffff'
            }
          }
        },
        {
          value: 5,
          name: '',
          itemStyle: {
            normal: {
              label: {
                show: false
              },
              labelLine: {
                show: false
              },
              color: 'rgba(0,0,0,0)',
              borderColor: 'rgba(0,0,0,0)',
              borderWidth: 1
            }
          }
        },
        {
          value: 256,
          name: '未使用',
          itemStyle: {
            normal: {
              borderWidth: 2,
              shadowBlur: 5,
              borderColor: '#4a5061',
              shadowColor: '#4a5061'
            }
          }
        },
        {
          value: 5,
          name: '',
          itemStyle: {
            normal: {
              label: {
                show: false
              },
              labelLine: {
                show: false
              },
              color: 'rgba(0,0,0,0)',
              borderColor: 'rgba(0,0,0,0)',
              borderWidth: 0
            }
          }
        }
      );
      let seriesOption = [
        {
          name: '',
          type: 'pie',
          radius: ['75%', '80%'],
          center: ['60%', '50%'],
          hoverAnimation: false,
          itemStyle: {
            normal: {
              label: {
                show: false
              }
            }
          },
          data: data
        },
        {
          type: 'pie',
          radius: [0, '75%'],
          center: ['60%', '50%'],
          hoverAnimation: false,
          itemStyle: {
            normal: {
              label: {
                show: false
              }
            }
          },
          data: [
            {
              name: '已使用',
              value: 39,
              itemStyle: {
                normal: {
                  label: {
                    show: false
                  },
                  color: {
                    type: 'linear',
                    colorStops: [
                      { offset: 0, color: 'rgba(0,255,243,0.2)' },
                      { offset: 1, color: 'rgba(0, 106,255,0.2)' }
                    ]
                  }
                }
              }
            },
            {
              name: '未使用',
              value: 256,
              itemStyle: { normal: { color: 'rgba(0,0,0,0)' } }
            }
          ]
        }
      ];
      let option = {
        tooltip: {
          show: false
        },
        toolbox: {
          show: false
        },
        series: seriesOption
      };
      return option;
    },