Element.runtimeStyle

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.

Summary

Element.runtimeStyle is a proprietary property  similar to HTMLElement.style, except its styles, that have higher precedence and modification.It does not modify the style content attribute. It is available in old versions of Microsoft Internet Explorer.

Specification

Not a part of any specification.

Microsoft has a description on MSDN.

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Microsoft Edge Opera Safari (WebKit)
Basic support No support No support 6 No support No support No support
Feature Android Firefox Mobile (Gecko) IE Phone Opera Mobile Safari Mobile
Basic support No support No support ? ? No support

See also

License

© 2016 Mozilla Contributors
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-us/docs/web/api/element/runtimestyle

API NeedsBrowserCompatibility NeedsExample NeedsMobileBrowserCompatibility Property