R: Change the HTML (or text) inside an element

html {shinyjs} | R Documentation

## Change the HTML (or text) inside an element

### Description

Change the text or HTML inside an element. The given HTML can be any R expression, and it can either be appended to the currentcontents of the element or overwrite it (default).

### Usage

    html(id, html, add, selector)

### Arguments

`id` | The id of the element/Shiny tag
`html` | The HTML/text to place inside the element. Can be either simple plain text or valid HTML code.
`add` | If `TRUE`, then append `html` to the contents of the element; otherwise overwrite it. (default: `FALSE`)
`selector` | JQuery selector of the elements to target. Ignored if the `id` argument is given.

### Note

`shinyjs` must be initialized with a call to `useShinyjs()` in the app's ui.

### See Also

`useShinyjs`, `runExample`

### Examples

    if (interactive()) {
      library(shiny)

      shinyApp(
        ui = fluidPage(
          useShinyjs(),  # Set up shinyjs
          actionButton("btn", "Click me"),
          p(id = "element", "Watch what happens to me")
        ),
        server = function(input, output) {
          observeEvent(input$btn, {
            # Change the following line for more examples
            html("element", paste0("The date is ", date()))
          })
        }
      )
    }
    ## Not run:
      # The shinyjs function call in the above app can be replaced by
      # any of the following examples to produce similar Shiny apps
      html("element", "Hello!")
      html("element", " Hello!", TRUE)
      html("element", "<strong>bold</strong> that was achieved with HTML")
      local({val <- "some text"; html("element", val)})
      html(id = "element", add = TRUE, html = input$btn)

    ## End(Not run)

[Package shinyjs version 0.9 Index]