What is Core Web Vitals - Reportwebvitals.js File use in React
Core web vitals have CLS, FID, LCP, TTFB which provide report of page responsiveness and helps in SEO rankings, the better loading time a webpage will have the better score page and search rankings it will have. When you install React JS and you find report web vitals .js file and if you are wondering what is the use of this and and how to report web vitals in react using getCLS, getFID, getFCP, getLCP, getTTFB then i've explained how you can post these values to Google analytics to keep your website same and have better seo rankings of your website by maintaining healthy core web vitals score of your React JS website. Layout shift a challenge which React developer can face which developing React app, I recommend to use explicit width and height of each element's container. Highly optimized website will surely have higher rankings for this you can defer javascript which is not in use till interaction. Reporting web vitals issues of webpage on each page load is important to keep an eye on issues and fix then before it appear on Google search console and effect your wesites search results.
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