Found a pretty annoying bug. I was expecting that when the context doesn't exist (i.e. not found on the current page), that live would not attach the event handlers to the elements in a multi selector. Turns out that it does it as expected for the first part of the multi selector and then ignores the non existing context for the other parts (i.e. it attaches the event handler)

Example:

<div class="foobar">

<div class="a">AAA</div>

<div class="b">BBB</div>

<div class="c">CCC</div>

</div>

var ctx = $('.nonExistingClass');

$('.a, .b, .c', ctx).live('click', function(event) {

$(this).css('color','red');

});

If the context doesn't exist, live still attaches the event handler to .b and .c

If you use bind instead, it works correctly and none of the parts of the multi selector get the event handler.

var ctx = $('.nonExistingClass');

$('.a, .b, .c', ctx).bind('click', function(event) {

$(this).css('color','red');

});