Browser extensions such as Stylus/Stylish use templates which call .firstElementChild but we can't port these to Edge because the full DocumentFragment api isn't supported right now.9 votes
Steps to reproduce the problem:
1. Open the testcase http://jsbin.com/fiqacod/edit?html,js,output in Edge.
What is the expected behavior?
The test should pass.
What went wrong?
The test failed, indicating that Edge does not support the relevant DOM4 methods.
Chrome Bug: https://bugs.chromium.org/p/chromium/issues/detail?id=255482
Firefox Bug: https://bugzilla.mozilla.org/show_bug.cgi?id=911477
Can I Use: http://caniuse.com/#feat=dom-manip-convenience278 votes
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