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Every New JavaScript Feature Worth Knowing

The article highlights upcoming JavaScript features expected in ES2026, including pattern matching, the pipeline operator, and record/tuple data structures. These additions aim to improve code readability, enable more expressive data transformations, and introduce immutable data types. The post provides code examples and explains practical use cases for each feature.

Background

JavaScript (JS) is the programming language that powers most interactive parts of websites. It is maintained by a standards body (TC39), which releases new official features roughly once a year. The 2026 edition (ES2026) continues this cycle. This article breaks down the most practically useful additions. Key terms to know: "TC39" is the committee of browser vendors and language experts who decide what makes it into the language; a "stage 4" proposal is one that is finalised and will definitely be in the spec. New features typically appear first in modern browsers (Chrome, Firefox, Safari, Edge) and runtimes like Node.js before becoming universally available.

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