In jquery, trigger () cannot trigger the hover event. jqueryhover

In jquery, trigger () cannot trigger the hover event. jqueryhover

I encountered a problem when I was working on a project today, but I did not know it before.

1. trigger method explanation

The official explanation is as follows:

Copy codeThe Code is as follows:
Description: Execute all handlers and behaviors attached to the matched elements for the given event type.

Usage:
. Trigger (eventType [, extraParameters])

EventType includes javascript built-in events, events added by jQuery, and custom events. For example:

$('#foo').bind('click', function(){ alert($(this).text());});$('#foo').trigger('click');$('#foo').bind('custom', function(event, param1, param2){ alert(param1 + "\n" + param2);});$('#foo').trigger('custom', ['Custom', 'Event']);

Very powerful, often used for page initialization.

2. trigger encounters hover

var $search=$('#header .search');$search.find('li').hover(function(){ alert(1);},function(){ alert(2);});$search.find('li').eq(0).trigger('hover');

The hover cannot be triggered. However:

var $search=$('#header .search');$search.find('li').click(function(){ alert(1);},function(){ alert(2);});$search.find('li').eq(0).trigger('click');

A normal click is triggered!

Solution:

Var $ search = $ ('# header. search'); $ search. find ('lil '). hover (function () {alert (1) ;}, function () {alert (2) ;}); $ search. find ('lil '). eq (0 ). trigger ('mouseenter'); // hover: mouseenter/mouseleave/mouseover/mouseout

The same situation exists in jQuery. live (). However, live is not recommended for Versions later than 1.7, instead of on.

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