--- title: ES6 - Higher-Order Functions | daily.dev description: In JavaScript, functions are treated as 'First Class' citizens. A function is fundamentally an object. We can assign properties to a function like 'Namaste' or... canonical: https://daily.dev/posts/es6---higher-order-functions-phx-6jzne twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: ES6 - Higher-Order Functions | daily.dev og:description: In JavaScript, functions are treated as 'First Class' citizens. A function is fundamentally an object. We can assign properties to a function like 'Namaste' or... og:url: https://daily.dev/posts/es6---higher-order-functions-phx-6jzne og:image: https://api.daily.dev/og/posts/PHx_6jZNe.png og:image:alt: ES6 - Higher-Order Functions 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. # ES6 - Higher-Order Functions **[Hashnode](https://daily.dev/sources/hashnode)** · [@skay](https://daily.dev/skay) · 9 min read · 27 upvotes · 2 comments ## Summary In JavaScript, functions are treated as 'First Class' citizens. A function is fundamentally an object. We can assign properties to a function like 'Namaste' or 'Hello' The forEach function was introduced with ES5 as Array.prototype.forEach and with ES6, it's simply referenced as. Array.map. The map function returns a function applied to every element of the original array. ## 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. **@skay** · 6 upvotes > A concise guide to all higher-order functions. A must read and good to bookmark for anytime reference. **@iaros** · 0 upvotes > Thanks a lot! --- Tags: [#general-programming](https://daily.dev/tags/general-programming), [#javascript](https://daily.dev/tags/javascript) [View this post on daily.dev](https://daily.dev/posts/es6---higher-order-functions-phx-6jzne) ```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":"ES6 - Higher-Order Functions","url":"https://daily.dev/posts/es6---higher-order-functions-phx-6jzne","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/es6---higher-order-functions-phx-6jzne"},"datePublished":"2020-10-14T06:30:58.159Z","dateModified":"2021-10-07T14:17:10.317Z","description":"In JavaScript, functions are treated as 'First Class' citizens. 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A must read and good to bookmark for anytime reference.","datePublished":"2020-10-14T06:49:02.751Z","url":"https://daily.dev/posts/PHx_6jZNe#c-X0WJe9WMv","author":{"@type":"Person","name":"Skay","url":"https://daily.dev/skay","image":"https://avatars0.githubusercontent.com/u/62467382?v=4"},"interactionStatistic":{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":6}},{"@type":"Comment","text":"Thanks a lot!","datePublished":"2020-10-14T22:25:43.976Z","url":"https://daily.dev/posts/PHx_6jZNe#c-iR8bJeKRb","author":{"@type":"Person","name":"Iaroslav","url":"https://daily.dev/iaros","image":"https://lh3.googleusercontent.com/a-/AAuE7mBael5pTvP9IS0CBBf2sjYhBO_xQ3RW6YpVrPNR6w=s100"}}]} ```