PHenryy commented on issue #4527: echarts的默认行为能否被监听到？能否监听画布的点击事件？ URL: https://github.com/apache/incubator-echarts/issues/4527#issuecomment-523431010 > 可以通过 ` if (e.target && e.target.dataIndex)` 判断是否选中了扇区 e.target.dataIndex 可能为 0 哦
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