//1, jQuery.event.add中jQuery.event.dispatch.apply( eventHandle.elem, arguments )//2, jQuery.event.simulate中jQuery.event.dispatch.call( elem, e );

dispatch: function( event ) {    // 修正事件源对象    event = jQuery.event.fix( event );    var i, j, ret, matched, handleObj,        handlerQueue = [],        args = core_slice.call( arguments ),        //得到绑定的事件对象        handlers = ( data_priv.get( this, "events" ) || {} )[ event.type ] || [],        special = jQuery.event.special[ event.type ] || {};    args[0] = event;    event.delegateTarget = this;    // Call the preDispatch hook for the mapped type, and let it bail if desired    if ( special.preDispatch && special.preDispatch.call( this, event ) === false ) {        return;    }    // 得到handler的执行队列    handlerQueue = jQuery.event.handlers.call( this, event, handlers );    // Run delegates first; they may want to stop propagation beneath us    i = 0;    while ( (matched = handlerQueue[ i++ ]) && !event.isPropagationStopped() ) {        event.currentTarget = matched.elem;        j = 0;        while ( (handleObj = matched.handlers[ j++ ]) && !event.isImmediatePropagationStopped() ) {            //不存在命名空间，或者匹配的命名空间            if ( !event.namespace_re || event.namespace_re.test( handleObj.namespace ) ) {                event.handleObj = handleObj;                event.data = handleObj.data;                //执行绑定函数                ret = ( (jQuery.event.special[ handleObj.origType ] || {}).handle || handleObj.handler )                        .apply( matched.elem, args );                // 如果是return false， 阻止默认事件，阻止冒泡                if ( ret !== undefined ) {                    if ( (event.result = ret) === false ) {                        event.preventDefault();                        event.stopPropagation();                    }                }            }        }    }    // Call the postDispatch hook for the mapped type    if ( special.postDispatch ) {        special.postDispatch.call( this, event );    }        return event.result;},