Скачать или смотреть Add Custom Scripts, Styles & Meta Dynamically in React JS

Learn how to add component specific javascript, styles, custom scripts, and meta tags in head section of webpage in react js. Sometimes you need external scripts to load in the component
such as script from Google Maps, Stripe, Facebook, reCAPTCHA, disqus, paypal, twitter, chatbots, tracking codes and more. You can do all of it by using a package in react js. It is used to dynamically inject CSS and JS files in components.

Package:
https://www.npmjs.com/package/react-h...

Why It Doesn't Appear in "View Source"

It dynamically injects title, meta, and other elements into the head of the document at runtime. As a result, we are unable to see these changes in the 'source' of the page because they aren’t part of the original server-rendered HTML. Instead, these elements are added after the page loads.

React applications render components dynamically in the browser, so changes made by react-helmet only affect the live DOM. Unless using server-side rendering (SSR) with frameworks like Next js or Gatsby, the HTML source doesn’t reflect these runtime changes.

If you want to see these changes in the initial HTML source (for SEO or other purposes), consider using a framework that supports SSR: such as Next js. Next js includes SSR out of the box and can render head tags on the server and Gatsby generates static HTML pages where title, meta, and other elements are part of the initial HTML.

With react-helmet in a client-rendered React app, expect dynamic updates to the head but only visible in the live DOM, not in the original HTML source.

Is react helmet useless for SEO?

Not exactly. react-helmet isn't entirely useless for SEO, but its effectiveness depends on how search engines handle JavaScript. Google can render JavaScript and typically does a good job of processing client-side rendered React apps, including changes made by react-helmet.

Google’s crawler renders the page after JavaScript has loaded, so it often sees the title, meta,
and other head tags added by react-helmet. For Google specifically, react-helmet is usually sufficient.

Some other less popular search engines and social media platforms may not render JavaScript as reliably as Google. For those, client-side modifications to meta tags are typically not processed,
meaning they may not recognize the updated metadata in head, which could impact SEO or how links preview on social media.

So these are few things to consider but this is how you can use custom scripts, styles, meta in reat js. If you are using next js or gatsby its more effective. All of these will load only in head section of web page from helmet.

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