Hi Rob, 

Thank you and team for Polymer, it's a wonderful thing, as is DART and 
Angular! 

I am just leaning Polymer Dart and I plan to adopt these 
frameworks/languages for all future HTML 5 development.  

What would help me a lot, and likely a ton of others is to understand 
when will the Polymer team complete full Polyfill support for *IE10+,* 
Safari 6+, Mobile Safari?   

Currently *IE10+* shows *Limited (Useable)* on *Template*, *Mutation 
Observer*, *Custom Elements*.  

This may be the reason that whenever I load up a Polymer based application 
it rarely renders in *IE11.09 (Desk Top)* and almost never in the Windows 
8.1 *(Tile View) IE Browser*. 

Do you see *IE10+* getting full PolyFill support anytime soon (perhaps 
before end of 2014)?

Also, what's up with IE, why hasn't MS provided any native support of Web 
Components. I thought MS was part of the group pushing the HTML 5 spec?

Cheers
John



On Saturday, June 28, 2014 7:12:21 PM UTC-4, Rob Dodson wrote:

> Hey fabrice, as I mentioned over on Youtube 
> <https://www.youtube.com/watch?v=HKrYfrAzqFA&google_comment_id=z12cz3qjbzidhdu0h23szp3prmbggnufm>,
>  
> we only support the last two version of each browser. Polymer is a future 
> facing library and we would need to significantly increase the size and 
> complexity of our polyfill layer if we started reaching back to support 
> extremely old legacy browsers.
>
> Btw, you mentioned IE10, we actually do support that one. And there aren't 
> many users on older versions of Chrome and Firefox as those browsers 
> auto-update.
>
>
> On Sat, Jun 28, 2014 at 3:48 AM, <[email protected] <javascript:>> wrote:
>
>> *Polymer is amazing! (but you probably know this)*
>> Polymer and Material Design was one of the most exciting things I have 
>> since in a while!
>>
>> I really liked the idea you could build apps with UI standards for Native 
>> device also across the web -- these days so many people think that the web 
>> is dead: because Apps are dominating in Mobile and Mobile is quickly 
>> dominating the web.
>> I also especially liked transitions/animations which I think is the next 
>> paradigm and really can improve UX. The whole Material Design is amazing.
>> Really really really amazing! I found myself watching as many videos as 
>> possible on Polymer and Material Design and there are now quite a few!
>>
>> *Browser compatibility: will Polymer be usable in the next 3 years?*
>> But the one big BIG disappointment is browser compatibility. I was 
>> disappointed when I say the compatibility guidelines: 
>> http://www.polymer-project.org/resources/compatibility.html
>> But somehow I couldn't beleive it and I just hoped it somehow degraded 
>> nicely on older browser. I was very disappointed when I found it really 
>> doesn't degrade beautifully at all on things like Safari 5 or IE9. It just 
>> completely falls appart. Apparently even Android web-view in some cases 
>> Polymer will completely break.
>>
>> So everything that was exciting about it especially being cross-device 
>> suddenly looked very over-stated at best. I mean we are all still hoping we 
>> can finally put IE6 behind us... So Safari 5, IE10, or older versions of 
>> Chrome & Firefox: that's at least 3 to 5 years *at best*!
>>
>> I am surprised more efforts were not put to help adopting Polymer by 
>> creating a smoother transition by having ways to degrade Polymer 
>> beautifully on older browsers. Even if that meant loosing the benefits of 
>> Polymer for any of these Browsers.
>> Have I missed something? Is there a way to degrade beautiful Polymer to 
>> support the majority of browsers? Will browser compatibility improve: is 
>> that somewhere on the near future of the product roadmap?
>>
>> Note: Attaching screenshot of Polymer demo running on Safari
>>
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