At http://api.jquery.com/live/ , the example at the bottom for custom events is:
<!DOCTYPE html>
<html>
<head>
<style>
p { color:red; }
span { color:blue; }
</style>
<script src="/scripts/jquery-1.4.js"></script>
</head>
<body>
<p>Has an attached custom event.</p>
<button>Trigger custom event</button>
<span style="display:none;"></span>
<script>
$("p").live("myCustomEvent", function(e, myName, myValue){
$(this).text("Hi there!");
$("span").stop().css("opacity", 1)
.text("myName = " + myName)
.fadeIn(30).fadeOut(1000);
});
$("button").click(function () {
$("p").trigger("myCustomEvent");
});
</script>
</body>
</html>
In the custom event, you'll notice two parameters: myName, myValue. In doing some testing on my own, I found that myName is the selector, and myValue would be the value of it (if it had a value).
When I run the demo, though, it shows "myName = undefined", which initially threw me off.
Also, the documentation at the top states that I can pass event data, but I do not see any examples on the page that use this.
I did see some on the bind() page after digging around a bit.
Edit: I am using Chrome 3.0 in case you were curious.