Remove Input from Shiny Session

The removal of the named input in a shiny session.

removeInput(
  id,
  selector = paste0("#", id),
  session = getDefaultReactiveDomain()
)

Arguments

id

Input value name

selector

The HTML selector to remove the UI for. By default it is the tag where the ID matches the input, but might need to be adjusted for different inputs.

session

The Shiny session to remove the input from

Value

An invisible `TRUE` value confirming that the input has been removed.

Details

If the input is a standard shiny input e.g. `numericInput`, then to remove the label as well as the input, set the selector to be `paste0(":has(> #", id, ")")`

Examples

if (FALSE) { # interactive()
library(shiny)
library(shiny.destroy)

ui <- fluidPage(
  numericInput("number", "Select number:", 5, 1, 10),
  p("Selected number:", textOutput("number_out", inline = TRUE)),
  actionButton("delete", "Remove input")
)

server <- function(input, output, session) {
  output$number_out <- renderText(input$number %||% "input unavailable")

  observeEvent(
    input$delete,
    removeInput("number", selector = ":has(> #number)")
   )
}

shinyApp(ui, server)
}