描述:

Remove all event handlers from all paragraphs:

$("p").off()

Remove all delegated click handlers from all paragraphs:

$("p").off( "click", "**" )

Remove just one previously bound handler by passing it as the third argument:

var foo = function () {
  // code to handle some kind of event
// ... now foo will be called when paragraphs are clicked ...
$("body").on("click", "p", foo);
// ... foo will no longer be called.
$("body").off("click", "p", foo); 

Unbind all delegated event handlers by their namespace:

var validate = function () {
  // code to validate form entries
// delegate events under the ".validator" namespace
$("form").on("click.validator", "button", validate);
$("form").on("keypress.validator", "input[type='text']", validate); 
// remove event handlers in the ".validator" namespace
$("form").off(".validator");