Callbacks let you pick up on events, i.e.: which slide is currently being viewed. For instance, it comes in handy to display animations at the right moment! Below are the callbacks available to each family of functions:

fullPage

• input$fp_origin: origin slide • input$fp_destination: destination slide
• input$fp_direction: scroll direction pagePiling & multiScroll • input$fp_anchor: slide anchor
• input$fp_index: slide index Demo: library(shiny) library(fullPage) ui <- fullPage( fullSection( menu = "first", center = TRUE, h1("Callbacks") ), fullSection( menu = "second", center = TRUE, h3("Slide"), verbatimTextOutput("slide") ) ) server <- function(input, output){ output$slide <- renderPrint({
shinyApp(ui, server)