问题
I would like to be able to change the value of a parameter by clicking on a R shiny button. So I need to buttons, one for increasing and one for decreasing the value.
I would like to keep the de-/increase of the value with a certain speed while holding the button.
By releasing the click of the button the action should stop.
So far I have not found this option for the actionButtons in R shiny. Is there another type of button which gives this opportunity?
来源：https://stackoverflow.com/questions/38497050/click-and-hold-button-in-r-shiny