jQuery not working with IE 11

For me the issue turned out to be I was using es6's right arrow functions => as opposed to function ().

Replacing => with function () resolved for me.

I had assumed it was a jQuery issue.

The problem was caused because the page was an intranet site, & IE had compatibility mode set to default for this. IE11 does support addEventListener()

As Arnaud suggested in a comment to the original post, you should put this in your html header:

<meta http-equiv="X-UA-Compatible" content="IE=edge">

I don't want any cred for this. I just want to make it more visible for anyone else that come here.