What is Hydration in Web Development? It is the process where… — Tech Jargon - Decoded — TG.ME

What is Hydration in Web Development? It is the process where client-side JavaScript attaches event listeners and state to a static HTML page that was previously rendered on the server. How it works: • The server sends a pre-rendered HTML file to the browser. • The browser displays this HTML immediately (users see content fast). • The JavaScript bundle loads and "walks" through the existing DOM. • It matches the HTML elements with the component logic. • It binds event listeners (like clicks or scrolls) to those elements. Problem it solves: • Slow First Paint: Prevents users from staring at a blank screen while JS loads. • SEO: Ensures search engines can read the content without executing JavaScript. Use Case: A "Like" button is visible on page load from the server HTML. Hydration connects the onClick function to that button so it actually increments the count when clicked.