JavaScript is the most popular language in the world. Why? Because it's the only well-adopted language supported by Web Browsers that brings dynamics to the frontend experience.
Because of that, almost any web application requires developers to write at least a bit of JavaScript code. While it's not a problem (unless you hate this language 😉), some of us tend to create very complex, frontend-heavy applications that load.. well, definitely not fast.
In this article, you'll get familiar with async and defer - two script tag attributes that will speed up your website's rendering.