Javascript Position Top. Most websites that have long texts to read use a button to help the users to return to the beginning. Whenever the function getscroll is encountered it sets the current value of the scrollbar to the span element whose id is position.
Var div documentcreateelementdiv. To set or return the bottom position of a positioned element use the bottom propertyjavascript how to get the top position of an element. Using firebug i can see that the div gets the position set to absolute but the top and left attributes are not set.
Toppos is the number of pixels from the top of the closest relatively positioned parent element.
To get the top and left position of an element relative to the document we first determine the xy coordinates of an element on the screen via getboundingclientrect. A positioned element is an element with the position the top property sets or returns the top position of a positioned element. The old way function getposition el var x 0. When a user scrolls and reads a large amount of text and wants to return to the top of the page he does not need to scroll several times to.