Shiny by RStudio

Insert UI objects

insertUI(selector, where = c("beforeBegin", "afterBegin", "beforeEnd",
  "afterEnd"), ui, multiple = FALSE, immediate = FALSE,
  session = getDefaultReactiveDomain())


selector A string that is accepted by jQuery's selector (i.e. the string s to be placed in a $(s) jQuery call). This selector will determine the element(s) relative to which you want to insert your UI object.
where Where your UI object should go relative to the selector:
Before the selector element itself
Just inside the selector element, before its first child
Just inside the selector element, after its last child (default)
After the selector element itself
Adapted from here.
ui The UI object you want to insert. This can be anything that you usually put inside your apps's ui function. If you're inserting multiple elements in one call, make sure to wrap them in either a tagList() or a tags$div() (the latter option has the advantage that you can give it an id to make it easier to reference or remove it later on). If you want to insert raw html, use ui = HTML().
multiple In case your selector matches more than one element, multiple determines whether Shiny should insert the UI object relative to all matched elements or just relative to the first matched element (default).
immediate Whether the UI object should be immediately inserted into the app when you call insertUI, or whether Shiny should wait until all outputs have been updated and all observers have been run (default).
session The shiny session within which to call insertUI.


Insert a UI object into the app.


This function allows you to dynamically add an arbitrarily large UI object into your app, whenever you want, as many times as you want. Unlike renderUI, the UI generated with insertUI is not updatable as a whole: once it's created, it stays there. Each new call to insertUI creates more UI objects, in addition to the ones already there (all independent from one another). To update a part of the UI (ex: an input object), you must use the appropriate render function or a customized reactive function. To remove any part of your UI, use removeUI.


## Only run this example in interactive R sessions if (interactive()) { # Define UI ui <- fluidPage( actionButton("add", "Add UI") ) # Server logic server <- function(input, output, session) { observeEvent(input$add, { insertUI( selector = "#add", where = "afterEnd", ui = textInput(paste0("txt", input$add), "Insert some text") ) }) } # Complete app with UI and server components shinyApp(ui, server) }

See also