jquery - What's the difference between .delegate() and live()? -

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since 

$("table").delegate("td", "hover", function(){     $(this).toggleclass("hover"); });

is equivalent following code written using .live():

$("table").each(function(){     $("td", this).live("hover", function(){         $(this).toggleclass("hover");     }); });

according jquery api.

i bet i'm wrong isn't same of writing

$("table td").live('hover', function() {});

so, what's .delegate() for?

.live() listens on document .delegate() listens on more local element, <table> in case.

they both act same listening events bubble, 1 .delegate() bubbles less before being caught.

your example of:

$("table td").live('hover', function() {});

isn't same, again attaches event handler document , not <table>, .delegate() more local elements, more efficient in respects...though still uses .live() under covers.

also keep in mind $(selector) retrieves elements, $("table td") selects bunch of elements no reason when using .live(), $("table").delegate() selects only <table> elements, it's more efficient not running selector , discarding result.


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