1. 仅事件变化时只刷新echart绑定的事件；2. 如果style或者className变化，先进行echarts.resize再刷新数…

…据更合理

src/core.tsx

@@ -45,35 +45,41 @@ export default class EChartsReactCore extends PureComponent<EChartsReactProps> {
     // 以下属性修改的时候，需要 dispose 之后再新建
     // 1. 切换 theme 的时候
     // 2. 修改 opts 的时候
-    // 3. 修改 onEvents 的时候，这样可以取消所有之前绑定的事件 issue #151
     if (
       !isEqual(prevProps.theme, this.props.theme) ||
-      !isEqual(prevProps.opts, this.props.opts) ||
-      !isEqual(prevProps.onEvents, this.props.onEvents)
+      !isEqual(prevProps.opts, this.props.opts)
     ) {
       this.dispose();
 
       this.renderNewEcharts(); // 重建
       return;
     }
 
-    // when thoes props isEqual, do not update echarts
-    const pickKeys = ['option', 'notMerge', 'lazyUpdate', 'showLoading', 'loadingOption'];
-    if (isEqual(pick(this.props, pickKeys), pick(prevProps, pickKeys))) {
-      return;
+    // 修改 onEvent 的时候先移除历史事件再添加
+    const echartInstance = this.getEchartsInstance();
+    if (!isEqual(prevProps.onEvents, this.props.onEvents)) {
+      this.offEvents(echartInstance, prevProps.onEvents);
+      this.bindEvents(echartInstance, this.props.onEvents || {});
     }
 
-    const echartsInstance = this.updateEChartsOption();
     /**
      * when style or class name updated, change size.
      */
     if (!isEqual(prevProps.style, this.props.style) || !isEqual(prevProps.className, this.props.className)) {
       try {
-        echartsInstance.resize();
+        echartInstance.resize();
       } catch (e) {
         console.warn(e);
       }
     }
+
+    // when thoes props isEqual, do not update echarts
+    const pickKeys = ['option', 'notMerge', 'lazyUpdate', 'showLoading', 'loadingOption'];
+    if (isEqual(pick(this.props, pickKeys), pick(prevProps, pickKeys))) {
+      return;
+    }
+
+    this.updateEChartsOption();
   }
 
   componentWillUnmount() {
@@ -151,6 +157,17 @@ export default class EChartsReactCore extends PureComponent<EChartsReactProps> {
     }
   }
 
+  // off the events
+  private offEvents(instance, events: EChartsReactProps['onEvents']) {
+    if (!events) return;
+    // loop and off
+    for (const eventName in events) {
+      if (isString(eventName) && Object.prototype.hasOwnProperty.call(events, eventName)) {
+        instance.off(eventName);
+      }
+    }
+  }
+
   /**
    * render the echarts
    */