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---
title: The New JavaScript Features Coming in ECMAScript 2023
description: ECMAScript will be approved in July 2023, but four proposals for new language features have already reached stage four. WeakMap lets you extend an object with...
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og:description: ECMAScript will be approved in July 2023, but four proposals for new language features have already reached stage four. WeakMap lets you extend an object with...
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# The New JavaScript Features Coming in ECMAScript 2023

**[The New Stack](https://daily.dev/sources/newstack)** · 12 min read · 176 upvotes · 18 comments

## Summary

ECMAScript will be approved in July 2023, but four proposals for new language features have already reached stage four. WeakMap lets you extend an object with extra properties without worrying about creating a memory leak. Change Array by Copy gives developers new methods for sorting, reversing and overwriting data without mutating the array it’s stored.

## Full article

daily.dev links to this article rather than hosting it. Read it at the original source: <https://thenewstack.io/the-new-javascript-features-coming-in-ecmascript-2023/>

## Community discussion

Top comments from developers on daily.dev.

**@vitruvius21** · 2 upvotes

> the most unfriendly reading, it's about JS and no single line of code as example....

**@nadersaoudi** · 0 upvotes

> Nice Article

**@ooguzyuksel** · 0 upvotes

> Informative article, thanks!

**@luci02** · 0 upvotes

> Nice article

**@mdrokz** · 0 upvotes

> Pretty cool!

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---

Tags: [#javascript](https://daily.dev/tags/javascript), [#open-source](https://daily.dev/tags/open-source), [#python](https://daily.dev/tags/python), [#typescript](https://daily.dev/tags/typescript)

[View this post on daily.dev](https://daily.dev/posts/the-new-javascript-features-coming-in-ecmascript-2023-hg6a65oar)

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