Optimizing Document Interactivity with JavaScript: A Guide to Leveraging document.onreadystatechange for Enhanced Web Performance

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This document.onreadystatechange event execute code when the document’s ready state changes. In this case, it checks if the document’s ready state is “interactive.”
The “interactive” state signifies that the HTML document has been fully parsed, and the DOM (Document Object Model) is available for manipulation. Inside the if statement, there is currently an empty block indicated by curly braces {}. You can add your custom JavaScript code or actions within this block to be executed when the document reaches the “interactive” state.
document.onreadystatechange = () => {
if (document.readyState === “interactive”) {