In another SEO Office Hours recording from January 2020, Google highlighted that JavaScript redirects do take longer to process than server-side redirects. You can watch that video here.

Beyond the usual quick tips, let's look at both the business case and the technical side of keeping React bundles lean.

But JavaScript can also be used for blocking bots. Using the latest version of Chrome I copied some of the JavaScript via Chrome Dev Tools and ran it through ChatGPT to ask what it does.