优化

components/Chart/Chart.js

@@ -77,7 +77,7 @@ Component({
           option.series = yData;
           option.xAxis[0].data = xData;
           option.series = yData;
-          this.chart.clear();
+          this.chart.clear()
           this.chart.setOption(option);
           this.setData({
             xData,