EVOLUTION-MANAGER
Edit File: updateTextAreaInput.html
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><title>R: Change the value of a textarea input on the client</title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <link rel="stylesheet" type="text/css" href="R.css" /> </head><body> <table width="100%" summary="page for updateTextAreaInput {shiny}"><tr><td>updateTextAreaInput {shiny}</td><td style="text-align: right;">R Documentation</td></tr></table> <h2>Change the value of a textarea input on the client</h2> <h3>Description</h3> <p>Change the value of a textarea input on the client </p> <h3>Usage</h3> <pre> updateTextAreaInput( session, inputId, label = NULL, value = NULL, placeholder = NULL ) </pre> <h3>Arguments</h3> <table summary="R argblock"> <tr valign="top"><td><code>session</code></td> <td> <p>The <code>session</code> object passed to function given to <code>shinyServer</code>.</p> </td></tr> <tr valign="top"><td><code>inputId</code></td> <td> <p>The id of the input object.</p> </td></tr> <tr valign="top"><td><code>label</code></td> <td> <p>The label to set for the input object.</p> </td></tr> <tr valign="top"><td><code>value</code></td> <td> <p>The value to set for the input object.</p> </td></tr> <tr valign="top"><td><code>placeholder</code></td> <td> <p>The placeholder to set for the input object.</p> </td></tr> </table> <h3>Details</h3> <p>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. </p> <p>The syntax of these functions is similar to the functions that created the inputs in the first place. For example, <code><a href="numericInput.html">numericInput</a>()</code> and <code>updateNumericInput()</code> take a similar set of arguments. </p> <p>Any arguments with NULL values will be ignored; they will not result in any changes to the input object on the client. </p> <p>For <code><a href="radioButtons.html">radioButtons</a>()</code>, <code><a href="checkboxGroupInput.html">checkboxGroupInput</a>()</code> and <code><a href="selectInput.html">selectInput</a>()</code>, the set of choices can be cleared by using <code>choices=character(0)</code>. Similarly, for these inputs, the selected item can be cleared by using <code>selected=character(0)</code>. </p> <h3>See Also</h3> <p><code><a href="textAreaInput.html">textAreaInput()</a></code> </p> <h3>Examples</h3> <pre> ## Only run examples in interactive R sessions if (interactive()) { ui <- fluidPage( sliderInput("controller", "Controller", 0, 20, 10), textAreaInput("inText", "Input textarea"), textAreaInput("inText2", "Input textarea 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$inText, based on x updateTextAreaInput(session, "inText", value = paste("New text", x)) # Can also set the label, this time for input$inText2 updateTextAreaInput(session, "inText2", label = paste("New label", x), value = paste("New text", x)) }) } shinyApp(ui, server) } </pre> <hr /><div style="text-align: center;">[Package <em>shiny</em> version 1.5.0 <a href="00Index.html">Index</a>]</div> </body></html>