I'm using the jQuery method "on" in a Rails app to attach an event on a form which doesn't always exist. It doesn't seem to be attaching an event handler when #myForm is appended to the document.
Here is UJS's suggested usage of on()
:
$("#myForm").on("ajax:complete", function(xhr, status) { ... }
Here is how I usually implement jQuery's on()
, but this does not seem to work:
$("body").on("ajax:complete", "#myForm", function(xhr, status) {...}
Rails UJS wiki: https://github.com/rails/jquery-ujs/wiki/ajax
UJS doesn't really have much to do with the
on
function. That's provided by jQuery, and it takes multiple forms. UJS simply fires theajax:complete
event so you can hook into it yourself.The
selector
argument is optional, so bothand
are valid uses, though they work somewhat differently.