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Is it possible to configure the tooltip option to accept multiple valueFormatter for each series? Let's say I have a series containing temperature data and another series containing heart rate. I would like to format these with different units (°C and Bpm respectively) and number of decimals.

I am aware that I can use the formatter option to achieve this task but that gets rid of the default tooltip styling which I would like to keep. Does anyone know of a way?

Is it possible to configure the tooltip option to accept multiple valueFormatter for each series? Let's say I have a series containing temperature data and another series containing heart rate. I would like to format these with different units (°C and Bpm respectively) and number of decimals.

I am aware that I can use the formatter option to achieve this task but that gets rid of the default tooltip styling which I would like to keep. Does anyone know of a way?

  • echarts
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1 Answer 1

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You can configure the tooltip for each series individually under series.tooltip.

Example:

series: [
    {
        ...,
        tooltip: {
            valueFormatter: value => value + ' °C'
        }
    },
    {
        ...,
        tooltip: {
            valueFormatter: value => value + ' Bpm'
        }
    },
]

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