I have just realised that a site that I have developed is not displaying at all on Internet Explorer. It's working on other browsers (Chrome and Safari).
I realise that there are ongoing problems with Internet Explorer with some javascript frameworks, but the site won't load any content at all.
I'm a novice, so unsure whether this is a Javascript or a CSS issue. I have read several online guides to trying to get CSS to work with IE, such as this, but to no avail.
Could anyone please suggest a fix, or an alternative that I could use (perhaps to serve a different site to IE users). Thanks in advance!
Your site works in Internet Explorer 10 and 11 (Tier 1 browsers, according to reveal.js). However, you have some invalid code that is causing the site to fall into quirks mode at times:
<div><!doctype html>
Please remove the <div> tag before the doctype; nothing is to precede the doctype.
The site continues to fail in Internet Explorer 9 due to the lack of certain methods and APIs. For instance, Reveal.js expects support for the classList API, which wasn't introduced into Internet Explorer until version 10.
If you wish to use this tool with IE 9 you will need to provide a polyfill for classList.
If/when you encounter issues like this in the future, open your F12 Developer Tools and look at the console output. In this case, both the contains and add methods were enumerated. This information would immediately suggest an issue with classList to any developer familiar with the API. This will result in a quicker and more reliable answer.