cjs_tooltip.RdUses a callback function within chartjs. Reference elements using template literal
notation e.g. 'x value: ${x}, y value: ${y}'.
See vignette('tooltips-and-interaction-modes', package = 'chartjs4r')
cjs_tooltip(
p,
label,
title,
beforeTitle,
afterTitle,
footer,
beforeFooter,
afterFooter
)An object of class htmlwidget