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DEV Community
dev.to › brayanarrieta › new-javascript-features-ecmascript-2021-with-examples-3hfm
New JavaScript Features ECMAScript 2021 (with examples) - DEV Community
April 26, 2022 - ECMAScript 2021 is the version of ECMAScript corresponding to this year. There are some useful and awesome features that have been incorporated and could be used in our javascript projects
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TC39
tc39.es › ecma262 › 2021
ECMAScript® 2021 Language Specification
The fifth edition of ECMAScript (published as ECMA-262 5th edition) codified de facto interpretations of the language specification that have become common among browser implementations and added support for new features that had emerged since the publication of the third edition.
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TutorialsPoint
tutorialspoint.com › javascript › javascript_ecmascript_2021.htm
JavaScript ECMAScript 2021 Features
ECMAScript 2021 brought many notable features to JavaScript. The introduction of the String replaceAll() method simplified global string replacement. Logical Assignment Operators, (&&=, ||=, and ??=), enhanced code conciseness.
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GeeksforGeeks
geeksforgeeks.org › new-features-in-ecmascript-2021-update
New Features in ECMAScript 2021 Update | GeeksforGeeks
March 2, 2023 - JavaScript in 2021/2022 continues to evolve, with ES2021/ES2022 bringing enhanced features like private class fields, promise improvements, and record data structures, boosting developer productivity and code quality.
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InfoWorld
infoworld.com › home › software development › programming languages › javascript
ECMAScript 2021 spec for JavaScript crosses the finish line | InfoWorld
July 23, 2021 - This proposal encompasses major new pieces of functionality: creating weak references to objects with the WeakRefcode class, and running user-defined finalizers after objects are garbage collected, using the FinalizationRegistry class.
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TC39
tc39.es › ecma262
ECMAScript® 2027 Language Specification
2 weeks ago - ECMAScript 2021, the 12th edition, introduced the replaceAll method for Strings; Promise.any, a Promise combinator that short-circuits when an input value is fulfilled; AggregateError, a new Error type to represent
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Medium
logismiko.medium.com › javascript-versions-ecmascript-2021-42e029e26329
JavaScript Versions — ECMAScript 2021 | by Logismiko | Medium
February 12, 2023 - The addition of new features and ... version introduced some exciting features such as numeric separators, string replaceAll method, Promise.any, Logical assignment operators, and much more....
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DEV Community
dev.to › naimlatifi5 › ecmascript-2021-es12-new-features-2l67
ECMAScript 2021 (ES12) new features - DEV Community
August 30, 2022 - On June 22 The ECMA International approved the latest version of the official specification ES12 aka ECMAScript 2021 by providing capabilities for strings, promises, classes and much more.
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W3Schools
w3schools.com › js › js_2021.asp
ECMAScript 2021
ECMAScript 2021 is supported in all modern browsers since April 2021: Promise.any() is a static method in JavaScript that takes an iterable of Promises as input and returns a single Promise.
Find elsewhere
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The New Stack
thenewstack.io › home › ecmascript 2021: what’s next for javascript?
ECMAScript 2021: What's Next for JavaScript? - The New Stack
February 1, 2022 - The latest additions to JavaScript are mostly improvements to make working with the language more developer-friendly. And there's more: A powerful new option is designed to support WebAssembly.
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V8
v8.dev › features
Features · V8
Class static initialization blocks 30 March 2021 ECMAScript
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DEV Community
dev.to › faithfulojebiyi › new-features-in-ecmascript-2021-with-code-examples-302h
New Features in ECMAScript 2021 (with code examples) - DEV Community
March 10, 2021 - In this tutorial we are going to learn about the new features we can use in the latest version of ECMAScript 2021 with some coding examples
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pawelgrzybek
pawelgrzybek.com › whats-new-in-ecmascript-2021
What's new in ECMAScript 2021 | pawelgrzybek.com
February 1, 2021 - Large numbers are hard to read. Thanks to Rick Waldron, we can now separate the digits group using underscores (_, U+005F). This feature is well-known from other programming languages like Java, Python, Perl, Ruby, Rust, Julia, Ada, C#.
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Ecma-international
262.ecma-international.org › 12.0
ECMAScript® 2021 Language Specification - ECMA-262
The fifth edition of ECMAScript (published as ECMA-262 5th edition) codified de facto interpretations of the language specification that have become common among browser implementations and added support for new features that had emerged since the publication of the third edition.
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GeeksforGeeks
geeksforgeeks.org › javascript › ecmascript-2021-js-2021-2022
ECMAScript 2021 (JS 2021/2022) - GeeksforGeeks
August 5, 2025 - JavaScript in 2021/2022 continues to evolve, with ES2021/ES2022 bringing enhanced features like private class fields, promise improvements, and record data structures, boosting developer productivity and code quality.
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Medium
timjwilliams.medium.com › three-useful-javascript-features-in-ecmascript-2021-71d3d8ede7d9
Three Useful JavaScript Features in ECMAScript 2021 | by Tim Williams | Medium
April 19, 2023 - ECMAScript 2021 introduces three new logical assignment operators, which combine the concepts of logical operations and assignment.
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Bitstack
blog.bitsrc.io › the-4-new-features-coming-in-ecmascript-2021-6fa24684b99b
4 New Exciting Features Coming in ECMAScript 2021 | by Fernando Doglio | Bits and Pieces
December 15, 2021 - Yet another method to handle multiple simultaneous promises is added in this version of ECMAScript.
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InfoWorld
infoworld.com › home › software development › programming languages › javascript
8 great new JavaScript language features in ES12 | InfoWorld
April 28, 2022 - Numeric separators are a nicety ... languages, because that symbol is already taken. So, ECMAScript 2021 introduced the underscore. ... The new form is quite a bit easier to read. This is more of a note than a feature....
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Ecma International
ecma-international.org › wp-content › uploads › ECMA-262_12th_edition_june_2021.pdf pdf
ECMAScript® 2021 Language Specification
12th Edition / June 2021 · ECMAScript® 2021 · Language Specification · COPYRIGHT PROTECTED DOCUMENT · © Ecma International 2020 · Ecma International · Rue du Rhone 114 · CH-1204 Geneva · Tel: +41 22 849 6000 · Fax: +41 22 849 6001 ·