jQuery 1.4.2

JQuery was updated to version 1.4.2.
Several bugs were fixed and a little functionality was added

1) 2 new methods .delegate () and .undelegate () were implemented , designed to complement the .live () and .die () methods . These methods make it easy to work with some specific events.

For example:

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


This is equivalent to the following code written using .live ():

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


2) improved performance - TaskSpeed ​​test - Judging by the abundance of dark green (the fastest / baseline) in jQuery 1.4.2 graph breaks into unconditional leaders. (Although tests are not a real application, of course)
Improved .bind () and .unbind () ( Ticket )
call improvements in .empty (), .remove (), and .html () ( Ticket )
improvements Improved insertion of a single DOM element to document ( Ticket , Additional Commit )
Improved call to $ ("body") ( commit )

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Changing the functionality of
jQuery 1.4.2 Released - examples of using new features