JavaScript is one of the most popular programming languages in the world. Most websites use it to create more dynamic experiences for visitors. Critical features like contact forms and site analytics are just a couple of ways JavaScript is put into practice on a daily basis. Unfortunately, while it's highly useful, all of this code has the potential to slow down your site.
Deferring parsing of JavaScript (also just called, "deferring JavaScript") means telling your site to load your non-essential JavaScript code last. This simple tweak can improve your page loading times and overall performance, depending on the number of scripts your website uses.
In this article, we'll break down exactly what parsing is and what deferring involves. We'll also discuss how deferring JavaScript can benefit your site and show you how to do it. Finally, we'll wrap up with some frequently asked questions (FAQs) to address any remaining doubts.
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