regionfragmentchange event is not hooked in IE10+

[itryapitsin]

I have the next code

this.namedFlow.addEventListener('regionfragmentchange', function () {...});

regionfragmentchange is hooked in Chrome, Opera, Yandex & Firefox, but doesn't work in IE10 & IE11

[FremyCompany]

Okay if that also apply to IE11 I'll take a look at it. Please provide a reduced test case I can run in both browsers to find out the difference ;-)

[itryapitsin]

it is reproduced in IE 11. As I can understand there are no call ondone method. This method is defined since 4996 line in https://github.com/FremyCompany/css-regions-polyfill/blob/master/bin/css-regions-polyfill.js file

I have attached small example with code for you. I hope it help.
bookjs-polyfill-master 2.zip

[FremyCompany]

I will have a look tomorrow

[FremyCompany]

From what I can see the problem is in your code. In IE, there are no element matching a rule creating a region at all. For some reason <div class="pagination-body-0-layout pagination-chapter"> never gets created at all. I don't understand how that could be related to the events generated by the polyfill, but maybe you can explain this to me.

[FremyCompany]

Could this be a race condition? IE uses additional polyfills to work, maybe something fires too early or too late and messes up with your flow but I don't really understand why.