https://takao.blog/zh-tw/tags/ecmascript/Recent content in Ecmascript on Commentary of TakaoHugo -- gohugo.iozh-TWCommentary of TakaoWed, 15 Jul 2026 22:01:08 +0900https://takao.blog/zh-tw/web/typescript-5-decorations-adoption/Sat, 05 Jul 2025 00:00:00 +0900https://takao.blog/zh-tw/web/typescript-5-decorations-adoption/<img src="https://takao.blog/img/thumbnail/typescript-5-decorations-adoption-zh-tw.png" alt="Featured image of post 如何 Use Standard Decorators in TypeScript" /><h2 id="introduction">Introduction </h2><p>In TypeScript, <strong>decorators</strong> have long been a key feature, popularized by major frameworks like Angular, NestJS, and TypeORM to manage metadata and dependency injection.</p> <p>However, for years, decorators remained an experimental feature (requiring the <code>experimentalDecorators</code> flag), relying on a legacy proposal that differed from the evolving ECMAScript (JavaScript) standard.</p> <p>With the release of TypeScript 5.0, <strong>official 支援 for the standard ECMAScript Decorators (Stage 3/4)</strong> was introduced. This brings improved type safety and runtime consistency to the decorator syntax. This article explains how to write standard decorators in modern TypeScript.</p>https://takao.blog/zh-tw/web/es2024-new-features/Tue, 12 Mar 2024 00:00:00 +0900https://takao.blog/zh-tw/web/es2024-new-features/<img src="https://takao.blog/img/thumbnail/es2024-new-features-zh-tw.png" alt="Featured image of post ES2024 新功能：JavaScript 的新功能" /><p>ECMAScript 2024 (ES15) 為 JavaScript 引進了幾個期待已久的功能。本文透過實際範例和採用時間表指南介紹了新功能。</p> <h2 id="陣列分組objectgroupby-和-mapgroupby">陣列分組：Object.groupBy 和 Map.groupBy </h2><p>最受歡迎的 JavaScript 功能之一終於到來了。 <code>Object.groupBy</code> 和 <code>Map.groupBy</code> 根據回呼將陣列元素分割為群組：</p>