--- title: React useMemo() guide with examples | daily.dev description: UseMemo() is a function that returns a memoized value of a resource-intensive function. In this post, we dive into the details of the useMemo hook with an... canonical: https://daily.dev/posts/react-usememo-guide-with-examples-rfcwkbwp1 twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: React useMemo() guide with examples | daily.dev og:description: UseMemo() is a function that returns a memoized value of a resource-intensive function. In this post, we dive into the details of the useMemo hook with an... og:url: https://daily.dev/posts/react-usememo-guide-with-examples-rfcwkbwp1 og:image: https://api.daily.dev/og/posts/RfcWKBWp1.png og:image:alt: React useMemo() guide with examples og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # React useMemo() guide with examples **[Community Picks](https://daily.dev/sources/community)** · 4 min read · 62 upvotes · 1 comments ## Summary UseMemo() is a function that returns a memoized value of a resource-intensive function. In this post, we dive into the details of the useMemo hook with an extension of the previous post titled Memo Let's. We are asking the hook to renew the memo when updatedPosts changes. In the component, we have a Get Latest Post button. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Community discussion Top comments from developers on daily.dev. **@zhondori** · 1 upvotes > interested --- Tags: [#react](https://daily.dev/tags/react), [#performance](https://daily.dev/tags/performance) [View this post on daily.dev](https://daily.dev/posts/react-usememo-guide-with-examples-rfcwkbwp1) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"React useMemo() guide with examples","url":"https://daily.dev/posts/react-usememo-guide-with-examples-rfcwkbwp1","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/react-usememo-guide-with-examples-rfcwkbwp1"},"datePublished":"2022-09-17T07:42:41.247Z","dateModified":"2023-12-07T12:02:45.284Z","description":"UseMemo() is a function that returns a memoized value of a resource-intensive function. 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