React useScrollLock Hook: Lock Body Scroll for Modals (2026)

<p><em>A complete developer tutorial on measuring, diagnosing, and eliminating Cumulative Layout Shift in React applications using the open-source <code>@page-speed/hooks</code>

<h1> React Scroll Effects Without External Libraries </h1> <p>Scroll is the most fundamental user interaction on the web. Progress bars that fill as you read, headers that shrink

<p>Here's a checkout flow that loses the customer at step three:<br /> </p> <div class="highlight js-code-highlight"> <pre class="highlight tsx"><code><span

<p>title: "Every React Developer Uses Hooks. Almost None Can Explain How They Work."<br /> description: A from-scratch build of React's hooks system reveals that the rules aren't

<p>You added a <code>useLayoutEffect</code> to measure a tooltip, shipped it, and the next time your Next.js (or Remix, or Gatsby) dev server rendered a page on the server, the

<p>I spent months building a production React platform that manages campaigns, customer conversations, and permissions across multiple organizations. Somewhere around the third