JavaScript Chart.js - Custom data formatting to display on tooltip

Question

I have looked at various documentation and similar questions on here, but cannot seem to find the particular solution. Apologies if I have missed anything obvious or have re

Answer 1

This works perfectly fine with me. It takes label and format the value.

options: {
        tooltips: {
            callbacks: {
                label: function(tooltipItem, data) {

                    let label = data.labels[tooltipItem.index];
                    let value = data.datasets[tooltipItem.datasetIndex].data[tooltipItem.index];
                    return ' ' + label + ': ' + value + ' %';

                }
            }
        }
    }