Installation

You can install the official version from CRAN:

install.packages("shinyjs")

Or you can be more adventurous and install the latest development version from GitHub:

install.packages("devtools")
devtools::install_github("daattali/shinyjs")


Quick Start

A typical Shiny app has a UI portion and a server portion. Before using most shinyjs functions, you need to call useShinyjs() in the app’s UI. It’s best to include it near the top as a convention.

Here is a minimal Shiny app that uses shinyjs:

library(shiny)
library(shinyjs)

ui <- fluidPage(
  useShinyjs(),  # Include shinyjs

  actionButton("button", "Click me"),
  textInput("text", "Text")
)

server <- function(input, output) {
  observeEvent(input$button, {
    toggle("text")  # toggle is a shinyjs function
  })
}

shinyApp(ui, server)

This is how most Shiny apps should initialize shinyjs - by calling useShinyjs() near the top of the UI.

However, if you use shinyjs in any of the following cases:

  • In Shiny dashboards (built using the shinydashboard package)
  • In Shiny apps that use a navbarPage layout
  • In Rmd documents
  • In Shiny apps that manually build the user interface with an HTML file or template (instead of using Shiny’s UI functions)

Then you should read the Advanced help page.

If your Shiny app doesn’t fall into any of these categories, then the above code sample should be enough to get your started with including shinyjs in your app.