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The Element.scrollTop property gets or sets the number of pixels that an element's content is scrolled vertically.

An element's scrollTop value is a measurement of the distance from the element's top to its topmost visible content. When an element's content does not generate a vertical scrollbar, then its scrollTop value is 0.

Syntax

// Get the number of pixels scrolled
var  intElemScrollTop = someElement.scrollTop;

After running this code, intElemScrollTop is an integer corresponding to the number of pixels that the element's content has been scrolled upwards.

// Set the number of pixels scrolled
element.scrollTop = intValue;

scrollTop can be set to any integer value, with certain caveats:

  • If the element can't be scrolled (e.g. it has no overflow or if the element has a property of  "non-scrollable"), scrollTop is 0.
  • scrollTop  doesn't respond to negative values; instead, it sets itself back to 0.
  • If set to a value greater than the maximum available for the element, scrollTop settles itself to the maximum value.

Example

padding-top

If you can see this, scrollTop = 0

Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.

If you can see this, scrollTop is > 0

Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

If you can see this, scrollTop is maxed-out

padding-bottom

Left Top Right Bottom margin-top margin-bottom border-top border-bottom

Specifications

Specification Status Comment
CSS Object Model (CSSOM) View Module
The definition of 'scrollTop' in that specification.
Working Draft

Browser compatibility

Feature Chrome Edge Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support (Yes) (Yes) (Yes) (Yes) (Yes) (Yes)
Feature Android Android Webview Edge Firefox Mobile (Gecko) Firefox OS IE Mobile Opera Mobile Safari Mobile Chrome for Android
Basic support ? (Yes) (Yes) (Yes) ? ? ? ? (Yes)

References