IE11 Compatibility?

[davidh71]

Hi,
Running in ie11 I get script errors because of the backticks in the regex.
Is this known issue?

Thanks

[RobTables]

I am new to this library and have not contributed but I feel like you may find it hard to get those who do contribute to work on support for IE

[mebjas]

Can you share the error message?

I do not have an IE11 setup with me but can try to resolve the issue, if you can help with validation.

[thatwill]

I also ran into this issue. (I wish I didn't have to support IE11, but it still ships with Windows 10!)

IE gives some errors for the csrfprotector.js file in the debugging console.
The initial error is:

SCRIPT1014: Invalid character
csrfprotector.js (47,26)

This refers to a line of code which contains a regex, presumably the same as @davidh71 found. IE stops execution of the JS at this point, so the token is not sent with POST requests.

Looking at that line, I found that the "template literals" are not supported in IE11, so anything like `Textstring${variable}moretext`, I had to change to 'Textstring'+variable+'moretext'.

After editing those, it got rid of the "invalid character" errors, but then got another error "Object doesn't support this action" relating to line 348.
IE11 also does not appear to support the Event constructor, so I had to use a CustomEvent polyfill from here, and assign it to Event.

After that, IE stopped giving errors, and it seems to work in IE and Firefox/Chrome (but haven't tested thoroughly yet).