Loading JavaScript asynchronously is critical for the performance of your web app. Below is an idea how to do it for the most common social buttons out there so you can make sure these don’t interfere with the loading of the rest of your content. After all people need to see your content first, then decide if it’s share-worthy.
Another great post by Stoyan Stefanov, who’s blog I suggest following/subscribing to. Social Button BFFs →