JS and jquery implement back to the top level

Source: Internet
Author: User


<! DOCTYPE html>

Point one: Document.documentElement.clientWidth | | Document.body.clientWidth; Gets the width of the visible area. Behind is chrome, which is compatible with other browsers.

Point two: OTop.style.left = screenw-otop.offsetwidth + "px"; When the page loads, place the element's position at the far right of the page, subtracting the width of the element itself with the width of the visible area.

Point three: OTop.style.top = screenh-otop.offsetheight + scrolltop + "px"; When the page scrolls, the y-coordinate position of the element is equal to the height of the visible area minus the height of the element itself, plus the scrolling distance.

Point four: document.documentElement.scrollTop = Document.body.scrollTop = 0; When clicking on an element, let the page scroll a distance of 0. write two for compatibility.


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JS and jquery implement back to the top level

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