Element.currentStyle

Non-standard
This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.

Element.currentStyle is a proprietary property which is similar to the standardized window.getComputedStyle() method. It is available in old versions of Microsoft Internet Explorer. However, it returns the units set in CSS while window.getComputedStyle() returns the values in pixels.

Polyfill

This polyfill returns the values in pixels and is likely to be rather slow, as it has to call window.getComputedStyle() every time its value is read.

/* Any copyright is dedicated to the Public Domain.
 * http://creativecommons.org/publicdomain/zero/1.0/ */

if (!("currentStyle" in Element.prototype)) {
  Object.defineProperty(Element.prototype, "currentStyle", {
    get: function() {
      return window.getComputedStyle(this);
    }
  });
}

Specification

Not part of any specification.

Microsoft had a description on MSDN.

Browser compatibility

DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
currentStyle
Non-standard
Chrome No support NoEdge No support NoFirefox No support NoIE Full support 6Opera No support NoSafari No support NoWebView Android No support NoChrome Android No support NoFirefox Android No support NoOpera Android No support NoSafari iOS No support NoSamsung Internet Android No support No

Legend

Full support
Full support
No support
No support
Non-standard. Expect poor cross-browser support.
Non-standard. Expect poor cross-browser support.

See also