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Elements failing instanceof after WebComponentsReady #402
Description
Activity
Confirm behavior is different between Firefox and Chrome, although I don't know exactly what polyfill or interaction is the root cause.
@jmesserly Would you mind taking a look at this? Thanks.
this looks like it was fixed to me. I'm now seeing the same result on Chrome/Firefox using a local server. (CxxFunctionElement: true)
for what it's worth, I think domReady is the callback you're looking for:
Polymer('cxx-section', { domReady: function() { var child = this.firstElementChild; this.tag_name = child.tagName; this.instance = child instanceof CxxFunctionElement; }, });
docs here: http://www.polymer-project.org/docs/polymer/polymer.html#lifecyclemethods
tentatively going to close assuming this is fixed, let me know if you see it crop up again. Cheers!
http://jeffrey.yasskin.info/dump/instanceof_test.html (code at https://gist.github.com/jyasskin/8575145) shows "Tag Name: CXX-FUNCTION; Instance of CxxFunctionElement: false" despite the element being registered with
<polymer-element name="cxx-function" constructor="CxxFunctionElement" noscript>.Oddly, copying the same code into a jsbin does not reproduce the problem. It has to run directly on a server. This is in Mac Chrome 34.0.1797.2 with none of the experimental flags turned on. On Canary with --enable-experimental-web-platform-features, the problem also doesn't happen, which makes me suspect the shadow dom polyfill wrapper objects.