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navigator.isProtocolHandlerRegistered and .unregisterProtocolHandler #3685

c960657 opened this Issue Aug 25, 2017 · 0 comments


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c960657 commented Aug 25, 2017

In addition to navigator.registerProtocolHandler I would like to see support for navigator.isProtocolHandlerRegistered and navigator.unregisterProtocolHandler.

The methods were defined in an early HTML5 draft specification but were removed in HTML 5.1.

Chrome 60
unregisterProtocolHandler is supported
isProtocolHandlerRegistered is WontFix'ed:

Firefox 55
Not supported

Safari 10.1.2
Not spported, despite this:

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