Defer JS

When you use "defer" with JavaScript (JS), it allows the browser to load the HTML content of a webpage first and then run the JavaScript code only after the page is fully loaded. This helps improve the page load time, especially in cases where large or complex JS scripts might slow down the rendering of the webpage.

In the case of Super Page Cache, adding the "defer" functionality ensures that the cached page loads more quickly and efficiently because the important visible content (HTML) loads first, while non-essential JavaScript runs later. This results in a faster and smoother experience for the user.