src/components/qiun-data-charts/components/qiun-data-charts/qiun-data-charts.vue
@@ -869,9 +869,12 @@
        const ctx = cfu.option[cid].context;
        if(typeof ctx === "object" && !!!cfu.option[cid].update){
          ctx.clearRect(0, 0, this.cWidth*this.pixel, this.cHeight*this.pixel);
          // 旧版 canvas 需 draw() 上屏;canvas2d 的 CanvasRenderingContext2D 无 draw 方法
          if (typeof ctx.draw === 'function') {
          ctx.draw();
        }
      }
      }
    },
    init() {
      let cid = this.cid