If You Use Disqus, There Might Be Issues with External Site Links When Displaying Pages in the iOS Twitter App

If you are using Disqus for your blog's comment system

When viewing the page in an iOS Twitter client app and clicking on a link to an external site, it resulted in a blank page without transitioning properly.

Initially, I couldn't figure out the cause, but it seemed that the Disqus JS was the problem. (When Disqus JS is loaded, it attaches strange methods to the link event handlers)

Since I wanted to continue using Disqus, I decided to disable Disqus JS only when accessed from the Twitter client.

You can determine if the client is Twitter by checking the User-Agent. Here's a simple way to do it:

var isTwitter = navigator.userAgent.match(/Twitter/);