My shiny app produces some files that user can download. I have put downloadbutton in the ui for this purpose. However, when the page launches and before any calculation is done, there is nothing to download. I want to prevent user from downloading e...
I'm trying to manually expand a submenu in a sidebar in shiny dashboard. The updateTabItems function allows me to go to the tab, but it does not expand the menu with it.  I am looking for a reproducible answer to the question here:how to manually...
I'm attempting to retrieve a cookie from a user's browser in a shiny app to produce a different UI for different users. To work with cookie sin R shiny, I've followed this tutorial and I've extended shinyjs with the following javascri...
In Shiny I use a horizontal radioGroupButtons input with huge number of items. If you click on one of the items, the color of the label of the button changes. This works actually fine.  However, if I click on one of the last items so that I have scro...
I have a selectizeInput UI object in my Shiny app and I would like to be able to copy and paste a comma-delimited list of inputs (i.e. copy from and paste to the selectizeInput).  At the moment I can copy the comma-delimited list of inputs (i.e. A, B...
I am creating a rather reactive app that has a few numericInput variables and some selectInput variables.   As the variables are quite many and they are used to estimate interventions, I am introducing colours to denote those variables that are diffe...
I want to call a javascript function, display in my case, from server.R with one parameter. The print statement below the call is getting executed, but the javascript function is not getting executed. Is this the right way of calling js function?   o...
I need to pass data from Sunburst plot to R (server side). The following code creates a sunburst plot and gives alert on the level that you select (curtesy of Kerry and his great work with HTMLWidgets and SunburstR). I would like to be able to pass t...
my question relates to observing the event of toggling and untoggling of the header in bsCollapsePanel in shinyBS.  Lets consider following following app as an example:  library(shiny) library(shinyBS) server = function(input, output, session) {...
I have a shiny app with an existing leaflet map in it. I want to be able to manipulate this map after rendering, using custom javascript through the shinyjs package. A minimal example is below:  app.R  # packages -------------------------------------...

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