Shiny App checkboxInput and conditionalPanel
问题 I am new to ShinyApp. I want to use a checkboxInput() with conditionalPanel, so when it's checked, the options for Type will show up (then users can select a Type from "BEER", "REFRESHMENT", "SPIRITS", "WINE"). If it's not checked, the options for Type will not show up. Below are my code, but when the Type options didn't show no matter I check the box or not. I guess I should write something in the server function? I really don't know. Thank you for your help. ui <- fluidPage( titlePanel("BC