Shiny slider restrict reaction to releasing left mouse button

Question

I am using a Shiny application in which it may take some time to set a slider to the right value.

So while trying to set the slider to the right value (and not releasing

Answer 1

Alright, after some digging, I think I've found the solution. It appears the cleanest way to do this, without needing to mess with Java script, would be to use the shinyCustom package, which has a useShinyCustom and customSliderInput function. With these, you can set the reactivity to "debounce" and also mess with the delay time. If you were to use these options together, you should be able to find the sweet spot for only updating the output once the slider stops moving. It won't be a perfect "on release of mouse button;" but it should be pretty darn close!

For example, you may try something like:

# Slider delay type is actually "debounce" by default 
useShinyCustom(slider_delay = "500"), # Doubles the default delay time in ms
customSliderInput("bins", #Use customSliderInput instead of sliderInput
              "Number of bins:",
              min = 1,
              max = 50,
              value = 30)