--- title: 8 Exciting New JavaScript Concepts You Need to Know description: Explore 8 new and exciting JavaScript concepts including Optional Chaining, Nullish Coalescing, BigInt, globalThis, matchAll(), Promise.allSettled(),... canonical: https://daily.dev/posts/8-exciting-new-javascript-concepts-you-need-to-know-5uogbl3lh twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: 8 Exciting New JavaScript Concepts You Need to Know | daily.dev og:description: Explore 8 new and exciting JavaScript concepts including Optional Chaining, Nullish Coalescing, BigInt, globalThis, matchAll(), Promise.allSettled(),... og:url: https://daily.dev/posts/8-exciting-new-javascript-concepts-you-need-to-know-5uogbl3lh og:image: https://api.daily.dev/og/posts/5UoGBl3LH.png og:image:alt: 8 Exciting New JavaScript Concepts You Need to Know 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. # 8 Exciting New JavaScript Concepts You Need to Know **[Community Picks](https://daily.dev/sources/community)** · 3 min read · 1833 upvotes · 56 comments ## Summary Explore 8 new and exciting JavaScript concepts including Optional Chaining, Nullish Coalescing, BigInt, globalThis, matchAll(), Promise.allSettled(), String.prototype.at(), and Error Cause. These features help in writing modern, efficient, and scalable code. Examples are provided for each concept to demonstrate their usage. ## 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. **@darkprogrammer** · 18 upvotes > I didn't knew a couple of these especially `globalThis`. > > Thanks for sharing! **@ekwoka** · 5 upvotes > These aren't very new. > > Like the newest of these is over 3 years old... **@quizapi** · 4 upvotes > Very informative 👌 **@nishain** · 4 upvotes > The last might be very important **@juliobermdez** · 3 upvotes > Most of these are not new though? There are more recent things you could've mentioned like the Temporal API or records and tuples. ## Similar posts on daily.dev - [Don’t just attend KubeCon \+ CloudNativeCon, Merge Forward your experience\!](https://daily.dev/posts/don-t-just-attend-kubecon-cloudnativecon-merge-forward-your-experience--l0rpp73x8) · CNCF · 1 upvotes · 0 comments - [Announcing H2 2026 KCDs](https://daily.dev/posts/announcing-h2-2026-kcds-m96goajm1) · CNCF · 1 upvotes · 0 comments - [Two months of Open Community Groups](https://daily.dev/posts/two-months-of-open-community-groups-asf52zhbs) · CNCF · 0 upvotes · 0 comments --- Tags: [#webdev](https://daily.dev/tags/webdev), [#javascript](https://daily.dev/tags/javascript) [View this post on daily.dev](https://daily.dev/posts/8-exciting-new-javascript-concepts-you-need-to-know-5uogbl3lh) ```json 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👌","datePublished":"2024-07-11T08:51:20.925Z","url":"https://daily.dev/posts/5UoGBl3LH#c-ouRKp2ONz","author":{"@type":"Person","name":"QuizAPI","url":"https://daily.dev/quizapi","image":"https://avatars.githubusercontent.com/u/61425414?v=4"},"interactionStatistic":{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":4}},{"@type":"Comment","text":"The last might be very important","datePublished":"2024-07-11T16:19:18.447Z","url":"https://daily.dev/posts/5UoGBl3LH#c-Q8rA9Xjqt","author":{"@type":"Person","name":"Nishain","url":"https://daily.dev/nishain","image":"https://lh3.googleusercontent.com/a/ACg8ocJNCd9ZKoluwC5GZxbW0AYy02lSV2KJGKO-1_Tk516yyKQkSoQj=s96-c"},"interactionStatistic":{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":4}},{"@type":"Comment","text":"Most of these are not new though? There are more recent things you could’ve mentioned like the Temporal API or records and tuples.","datePublished":"2024-08-03T00:26:14.567Z","url":"https://daily.dev/posts/5UoGBl3LH#c-fOnG5RNkP","author":{"@type":"Person","name":"Julio Bermúdez","url":"https://daily.dev/juliobermdez","image":"https://lh3.googleusercontent.com/a/ACg8ocLUwCuVm0zy6V7PKayWLEtHClxDG51UlPbbc5mJJZ96X7sTSg=s96-c"},"interactionStatistic":{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":3}}]} ```