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This article explains the ES2020 optional chaining (?.) and dynamic import() features, showing their syntax, practical code examples, compatibility notes, and how they simplify JavaScript code while improving web application performance.
This article reviews the most useful ES2020 (ES11) JavaScript features—including private class fields, Promise.allSettled, the BigInt type, nullish coalescing (??), optional chaining (?.), dynamic import, String.prototype.matchAll, globalThis, and module namespace exports—explaining their syntax, behavior, and practical code examples.
This article summarizes the major ES2020 JavaScript enhancements—including Promise.allSettled, globalThis, optional chaining, nullish coalescing, import.meta, BigInt, dynamic import, private class fields, matchAll, deterministic for‑in order, and module namespace exports—providing concise explanations and code examples for each feature.