[Chartjs]-Event on Chart.JS's Bar Chart's mousein and mouseout?

Here’s a solution to my issue:

options.tooltips = {
    // Hide the tooltips
    backgroundColor: 'rgba(0,0,0,0)',
    displayColors: false,
    callbacks: {
        labelTextColor: function () {
            return 'rgba(0,0,0,0)';
        },
        labelColor: function () {
            return {
                borderColor: 'rgba(0, 0, 0, 0)',
                backgroundColor: 'rgba(0, 0, 0, 0)'
            }
        }
    },
    // Highlight the HTML elements on bar hover
    custom: function(tooltipModel) {

        if (tooltipModel.body === undefined) {
            // flip bool false
            return;
        }

        if (/* ... */) {
            // flip bool true
        }

        return;
    }
};