示例

描述:

Display a paragraph's text in an alert when it is clicked:

$("p").on("click", function(){
alert( $(this).text() );
});

Pass data to the event handler, which is specified here by name:

function myHandler(event) {
alert(event.data.foo);
}
$("p").on("click", {foo: "bar"}, myHandler)

Cancel a form submit action and prevent the event from bubbling up by returning false:

$("form").on("submit", false)

Cancel only the default action by using .preventDefault().

$("form").on("submit", function(event) {
  event.preventDefault();
});

Stop submit events from bubbling without preventing form submit, using .stopPropagation().

$("form").on("submit", function(event) {
  event.stopPropagation();
});