如何更改R-Shiny的"checkboxinput"以编程方式将值设置为FALSE/TRUE? [英] How can I change R-Shiny "checkboxinput" value to FALSE/TRUE programmatically?

问题描述

我想在运行时将checkboxinput值更改为FALSE/TRUE.我该怎么办?

I want to change the checkboxinput value to FALSE/TRUE during run-time. How can I do this?

checkboxInput(inputId = "smoother", label = "Overlay smooth trend line", value = FALSE)

推荐答案

您可以使用 updateCheckboxInput().请参见下面的示例:

You can use updateCheckboxInput(). See an example below:

可复制的示例:

library(shiny)
ui <- fluidPage(
  actionButton(
    inputId = "check",
    label = "update checkbox"
  ),
  checkboxInput(
    inputId =  "checkbox", 
    label = "Input checkbox"
  )
)

server <- function(input, output, session) {
  observeEvent(
    eventExpr = input$check, {
      updatedValue = !input$checkbox

      updateCheckboxInput(
        session =  session,
        inputId =  "checkbox", 
        value = updatedValue
      )
    }
  )
}

shinyApp(ui, server)

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