Checks to see if the tag name is supported by the current platform.
The tag should be a valid HTML tag name.
static bool isTagSupported(String tag) { var e = _ElementFactoryProvider.createElement_tag(tag, null); return e is Element && !(e is UnknownElement); }
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Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
https://api.dartlang.org/stable/2.0.0/dart-html/Element/isTagSupported.html