onevent {shinyjs} | R Documentation |
onclick
runs an R expression (either a shinyjs
function or any other code)
when an element is clicked.
onevent
is similar, but can be used when any event is triggered on the element,
not only a mouse click. See below for a list of possible event types. Using "click"
results in the same behaviour as calling onclick
.
onclick(id, expr, add = FALSE) onevent(event, id, expr, add = FALSE)
id |
The id of the element/Shiny tag |
expr |
The R expression or function to run after the event is triggered. If a function with an argument is provided, it will be called with the JavaScript Event details as its argument. Using a function can be useful when you want to know for example what key was pressed on a "keypress" event. |
add |
If |
event |
The event that needs to be triggered to run the code. See below for a list of possible event types. |
Any mouse or
keyboard events
that are supported by JQuery can be used. The full list of events that can be used is:
click
, dblclick
, hover
, mousedown
, mouseenter
,
mouseleave
, mousemove
, mouseout
, mouseover
, mouseup
,
keydown
, keypress
, keyup
.
shinyjs
must be initialized with a call to useShinyjs()
in the app's ui.
if (interactive()) { library(shiny) shinyApp( ui = fluidPage( useShinyjs(), # Set up shinyjs p(id = "date", "Click me to see the date"), p(id = "coords", "Click me to see the mouse coordinates"), p(id = "disappear", "Move your mouse here to make the text below disappear"), p(id = "text", "Hello") ), server = function(input, output) { onclick("date", alert(date())) onclick("coords", function(event) { alert(event) }) onevent("mouseenter", "disappear", hide("text")) onevent("mouseleave", "disappear", show("text")) } ) } ## Not run: # The shinyjs function call in the above app can be replaced by # any of the following examples to produce similar Shiny apps onclick("disappear", toggle("text")) onclick(expr = text("date", date()), id = "date") ## End(Not run)