//send message
this.$items.on('move moved', function(e) {
var index = self.$items.index(this);

if (e.type === 'move') {
if (index === self.curIndex) {
self.$elem.trigger('slider-hide', [index, this]);
} else {
self.$elem.trigger('slider-show', [index, this]);
}
} else { // moved
if (index === self.curIndex) { // 指定的
self.$elem.trigger('slider-shown', [index, this]);
} else {
self.$elem.trigger('slider-hidden', [index, this]);
}
}
});