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updateTextInput

Change the value of a text input on the client


Description

Change the value of a text input on the client

Usage

updateTextInput(
  session = getDefaultReactiveDomain(),
  inputId,
  label = NULL,
  value = NULL,
  placeholder = NULL
)

Arguments

session

The session object passed to function given to shinyServer. Default is getDefaultReactiveDomain().

inputId

The id of the input object.

label

The label to set for the input object.

value

Initial value.

placeholder

A character string giving the user a hint as to what can be entered into the control. Internet Explorer 8 and 9 do not support this option.

Details

The input updater functions send a message to the client, telling it to change the settings of an input object. The messages are collected and sent after all the observers (including outputs) have finished running.

The syntax of these functions is similar to the functions that created the inputs in the first place. For example, numericInput() and updateNumericInput() take a similar set of arguments.

Any arguments with NULL values will be ignored; they will not result in any changes to the input object on the client.

For radioButtons(), checkboxGroupInput() and selectInput(), the set of choices can be cleared by using choices=character(0). Similarly, for these inputs, the selected item can be cleared by using selected=character(0).

See Also

Examples

## Only run examples in interactive R sessions
if (interactive()) {

ui <- fluidPage(
  sliderInput("controller", "Controller", 0, 20, 10),
  textInput("inText", "Input text"),
  textInput("inText2", "Input text 2")
)

server <- function(input, output, session) {
  observe({
    # We'll use the input$controller variable multiple times, so save it as x
    # for convenience.
    x <- input$controller

    # This will change the value of input$inText, based on x
    updateTextInput(session, "inText", value = paste("New text", x))

    # Can also set the label, this time for input$inText2
    updateTextInput(session, "inText2",
      label = paste("New label", x),
      value = paste("New text", x))
  })
}

shinyApp(ui, server)
}

shiny

Web Application Framework for R

v1.6.0
GPL-3 | file LICENSE
Authors
Winston Chang [aut, cre], Joe Cheng [aut], JJ Allaire [aut], Carson Sievert [aut], Barret Schloerke [aut], Yihui Xie [aut], Jeff Allen [aut], Jonathan McPherson [aut], Alan Dipert [aut], Barbara Borges [aut], RStudio [cph], jQuery Foundation [cph] (jQuery library and jQuery UI library), jQuery contributors [ctb, cph] (jQuery library; authors listed in inst/www/shared/jquery-AUTHORS.txt), jQuery UI contributors [ctb, cph] (jQuery UI library; authors listed in inst/www/shared/jqueryui/AUTHORS.txt), Mark Otto [ctb] (Bootstrap library), Jacob Thornton [ctb] (Bootstrap library), Bootstrap contributors [ctb] (Bootstrap library), Twitter, Inc [cph] (Bootstrap library), Prem Nawaz Khan [ctb] (Bootstrap accessibility plugin), Victor Tsaran [ctb] (Bootstrap accessibility plugin), Dennis Lembree [ctb] (Bootstrap accessibility plugin), Srinivasu Chakravarthula [ctb] (Bootstrap accessibility plugin), Cathy O'Connor [ctb] (Bootstrap accessibility plugin), PayPal, Inc [cph] (Bootstrap accessibility plugin), Stefan Petre [ctb, cph] (Bootstrap-datepicker library), Andrew Rowls [ctb, cph] (Bootstrap-datepicker library), Dave Gandy [ctb, cph] (Font-Awesome font), Brian Reavis [ctb, cph] (selectize.js library), Salmen Bejaoui [ctb, cph] (selectize-plugin-a11y library), Denis Ineshin [ctb, cph] (ion.rangeSlider library), Sami Samhuri [ctb, cph] (Javascript strftime library), SpryMedia Limited [ctb, cph] (DataTables library), John Fraser [ctb, cph] (showdown.js library), John Gruber [ctb, cph] (showdown.js library), Ivan Sagalaev [ctb, cph] (highlight.js library), R Core Team [ctb, cph] (tar implementation from R)
Initial release

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