--- title: "Time is a construct but it can still break your software" source_name: "Stack Overflow Blog" original_url: "https://stackoverflow.blog/2026/05/01/time-is-a-construct-but-it-can-break-your-software/" canonical_url: "https://www.traeai.com/articles/a0d27e04-83c9-41ec-b1b0-4b3271503425" content_type: "article" language: "中文" score: 7.8 tags: ["JavaScript","Temporal","TC39","前端","时区"] published_at: "2026-05-01T07:40:00+00:00" created_at: "2026-05-01T19:24:42.978661+00:00" --- # Time is a construct but it can still break your software Canonical URL: https://www.traeai.com/articles/a0d27e04-83c9-41ec-b1b0-4b3271503425 Original source: https://stackoverflow.blog/2026/05/01/time-is-a-construct-but-it-can-break-your-software/ ## Summary JavaScript 的 Date API 存在固有缺陷，Temporal 提案历经九年终成标准，提供不可变、时区安全、高精度的现代时间处理能力。 ## Key Takeaways - Date 对象是可变且易出错的，导致大量隐蔽 bug - Temporal 通过分离时间概念（Instant/PlainDateTime/ZonedDateTime）实现语义清晰与时区正确性 - 库如 Moment.js 曾缓解问题但自身复杂化，Temporal 是原生、标准化的终极解 ## Content Title: Time is a construct but it can still break your software URL Source: http://stackoverflow.blog/2026/05/01/time-is-a-construct-but-it-can-break-your-software/ Markdown Content: # Time is a construct but it can still break your software - Stack Overflow [Blog](http://stackoverflow.blog/) [](https://stackoverflow.com/)[](http://stackoverflow.blog/feed)[](https://stackoverflow.com/users/email/settings/current) Log in [Sign up](https://stackoverflow.com/users/signup?ssrc=blog&returnurl=https://stackoverflow.blog/2026/05/01/time-is-a-construct-but-it-can-break-your-software/) * [Everything](http://stackoverflow.blog/) * [Productivity](http://stackoverflow.blog/productivity/) * [AI/ML](http://stackoverflow.blog/ai/) * [Open Source](http://stackoverflow.blog/open-source/) * [Business Hub](http://stackoverflow.blog/business/) * [Company](http://stackoverflow.blog/company/) * [Releases](http://stackoverflow.blog/releases/) * [Podcast](http://stackoverflow.blog/podcast/) * [Newsletter](http://stackoverflow.blog/newsletter/) [Stack Overflow Business](https://stackoverflow.co/) [**Stack Internal**: the knowledge intelligence layer that powers enterprise AI.](https://stackoverflow.co/internal/?utm_source=so-owned&utm_medium=blog&utm_campaign=nav-side-bar)[**Stack Data Licensing**:decades of verified, technical knowledge to boost AI performance and trust.](https://stackoverflow.co/data-licensing/?utm_source=so-owned&utm_medium=blog&utm_campaign=nav-side-bar)[**Stack Ads**: engage developers where it matters — in their daily workflow.](https://stackoverflow.co/advertising/employer-branding/?utm_source=so-owned&utm_medium=blog&utm_campaign=nav-side-bar) May 1, 2026 # Time is a construct but it can still break your software Ryan welcomes Jason Williams, senior software engineer at Bloomberg and the creator of Rust-based JavaScript engine Boa, to the show to dive into why date and time handling in JavaScript is so difficult and how the Temporal proposal aims to fix it. ![Image 1: Article hero image](https://cdn.stackoverflow.co/images/jo7n4k8s/production/e35a0c5eb319e7928c9ac0a2c2c782d29e644876-3120x1640.png?w=780&h=410&auto=format&dpr=2) They explore the current flaws and issues in JavaScript that make the Date object so hard to work with, how libraries like Moment.js helped but eventually became too complex themselves, and why the Temporal proposal took nine years to complete. [Temporal](https://tc39.es/proposal-temporal/docs/) is a new TC39 proposed standard for JavaScript that replaces the Date object. It operates as a top-level namespace and brings a modern date/time API to the ECMAScript language. Connect with Jason on [Bluesky](https://bsky.app/profile/jason-williams.co.uk) or at [his website](https://jason-williams.co.uk/). Congrats to Great Answer badge winner [BrenBarn](https://stackoverflow.com/users/1427416/brenbarn), who won the badge for their answer to [rethrowing python exception. Which to catch?](https://stackoverflow.com/questions/25001971/rethrowing-python-exception-which-to-catch). ## Subscribe to the podcast Get The Stack Overflow Podcast at your favorite listening service. 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