[GitHub] FionaFromChina edited a comment on issue #5994: 如何通过action触发toolbox里datazoom的区域缩放功能，而不是用鼠标点击

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FionaFromChina edited a comment on issue #5994: 如何通过action触发toolbox里datazoom的区域缩放功能，而不是用鼠标点击
URL: https://github.com/apache/incubator-echarts/issues/5994#issuecomment-405919505
 
 
   遇到同样问题，查看源码其实现，见：https://github.com/apache/incubator-echarts/blob/master/src/component/toolbox/feature/DataZoom.js
   可通过dispatchAction实现。
   注：必须先设置了```toolbox.feature.dataZoom.show: true```，后面的dispatchAction才会生效。
   代码如下：
   ```js
   this.chart.dispatchAction({
           type: 'takeGlobalCursor',
           key: 'dataZoomSelect',
           dataZoomSelectActive: true // 允许缩放
         })
   ```
   项目要求始终允许缩放，且不显示icon，可以设置toolbox.itemSize=0实现

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