How can I access the parameter value for the tooltip callback function within echarts?

I am attempting to retrieve the value for this specific Apache EChart from within the callback function of the tooltip formatter.

When I manually input the value, the formatting function operates correctly:

formatter: (params:any) => `$ ${Math.round(parseInt('100.000', 10))}`,

The tooltip then presents $ 100.

However, upon replacing 100.000 with params.value, the result is NaN. How can we successfully access the value?

Answer №1

After some trial and error, I found the solution:

formatter: (data:any) => `$ ${Math.round(parseInt(data[0].value, 10))}`,

Feel free to check out this demo for experimenting with the code.

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