demarches-normaliennes/app/javascript/new_design/toggle-chart.js

import $ from 'jquery';
import Chartkick from 'chartkick';

export function toggleChart(event, chartClass) {
  const nextSelectorItem = $(event.target),
    nextChart = $(chartClass),
    nextChartId = nextChart
      .children()
      .first()
      .attr('id'),
    currentSelectorItem = nextSelectorItem
      .parent()
      .find('.segmented-control-item-active'),
    currentChart = nextSelectorItem
      .parent()
      .parent()
      .find('.chart:not(.hidden)');

  // Change the current selector and the next selector states
  currentSelectorItem.toggleClass('segmented-control-item-active');
  nextSelectorItem.toggleClass('segmented-control-item-active');

  // Hide the currently shown chart and show the new one
  currentChart.toggleClass('hidden');
  nextChart.toggleClass('hidden');

  // Reflow needed, see https://github.com/highcharts/highcharts/issues/1979
  Chartkick.charts[nextChartId].getChartObject().reflow();
}