Видео ютуба по тегу How To Find Top Offset In Jquery

jQuery : Offset fixed div from top and bottom
jQuery : Offset fixed div from top and bottom
jQuery : How do I get the offset().top value of an element without using jQuery?
jQuery : How do I get the offset().top value of an element without using jQuery?
Get mouse position in javascript/Javascript offset/mouse position count using offset #No_Limit_Code
Get mouse position in javascript/Javascript offset/mouse position count using offset #No_Limit_Code