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echarts怎样获取每次选中的index?以及最后一次选中的index呢?

如题:
echarts怎样获取每次选中的index?以及最后一次选中的index呢?


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似乎是dataIndex这个:
https://echarts.apache.org/zh...

这样就能得到:
let myChart = this.$echarts.init(document.getElementById(id))
myChart.on('mouseover', (v) => {

    console.log('鼠标移上去的index:')
    console.log(v.dataIndex)
  })

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