I volontari di MDN non hanno ancora tradotto questo articolo in Italiano. Registrati per tradurlo tu.
The HTMLElement.offsetTop
read-only property returns the distance of the current element relative to the top of the offsetParent
node.
Syntax
topPos = element.offsetTop;
Parameters
topPos
is the number of pixels from the top of the closest relatively positioned parent element.
Example
var d = document.getElementById("div1"); var topPos = d.offsetTop; if (topPos > 10) { // object is offset more // than 10 pixels from its parent }
Specification
Specification | Status | Comment |
---|---|---|
CSS Object Model (CSSOM) View Module The definition of 'offsetTop' in that specification. |
Working Draft |
Browser compatibility
Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
---|---|---|---|---|---|
Basic support | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) |
Feature | Android | Android Webview | Firefox Mobile (Gecko) | Firefox OS | IE Mobile | Opera Mobile | Safari Mobile | Chrome for Android |
---|---|---|---|---|---|---|---|---|
Basic support | ? | (Yes) | ? | ? | ? | ? | ? | (Yes) |
In compliance with the specification, this property will return null
on Webkit if the element is hidden (the style.display
of this element or any ancestor is "none"
) or if the style.position
of the element itself is set to "fixed"
.
This property will return null
on Internet Explorer (9) if the style.position
of the element itself is set to "fixed"
. (Having display:none
does not affect this browser.)