ListView and ajax pagination in Pjax

What extactly are the ‘enablePushState’ , ‘enableReplaceState’ and how works in Pjax ?

Also how to combine with manually javascript refresh like $.pjax.reload({container: ‘#pjax-gallery’}); ?

My Pjax contains a ListView with ajax pagination

I want after of execution of $.pjax.reload({container: ‘#pjax-gallery’}) refreshing only the ListView without refreshing entire page

Thanks

Any one’s suggestion?