camsong / fetch-ie8

A window.fetch JavaScript polyfill supporting IE8
MIT License
279 stars 33 forks source link

Doesn't work on IE9 when accessing another domain #13

Open laukstein opened 6 years ago

laukstein commented 6 years ago

Tested on v1.5.0. Works fine on IE10+, not in IE9.

fetch("http://example.com/api/test")

Always returns Possible Unhandled Promise Rejection: Error: Access is denied, no outgoing network requests, nothing new in server access.log

grabilla em2472

The same issue when used latest https://github.com/github/fetch (v7.0.2, officially supports IE10+). I use Promise polyfill, post here https://github.com/taylorhakes/promise-polyfill/issues/69 if it is its related issue.