[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"project-260":3},{"id":4,"name":5,"fullName":6,"owner":7,"repo":5,"description":8,"homepage":9,"htmlUrl":10,"language":10,"languages":10,"totalLinesOfCode":10,"stars":11,"forks":12,"watchers":13,"openIssues":14,"contributorsCount":15,"subscribersCount":15,"size":15,"stars1d":15,"stars7d":16,"stars30d":17,"stars90d":15,"forks30d":15,"starsTrendScore":18,"compositeScore":19,"rankGlobal":10,"rankLanguage":10,"license":20,"archived":21,"fork":21,"defaultBranch":22,"hasWiki":21,"hasPages":21,"topics":23,"createdAt":10,"pushedAt":10,"updatedAt":37,"readmeContent":38,"aiSummary":39,"trendingCount":15,"starSnapshotCount":15,"syncStatus":14,"lastSyncTime":40,"discoverSource":41},260,"You-Dont-Know-JS","getify\u002FYou-Dont-Know-JS","getify","A book series (2 published editions) on the JS language.","https:\u002F\u002Fwww.amazon.com\u002Fdp\u002FB085XXCJ7X",null,184530,33520,5759,2,0,23,98,7,91.3,"Other",false,"2nd-ed",[24,25,26,27,28,29,30,31,32,33,34,35,36],"async","book","book-series","closures","education","es2015","es6","javascript","learn-to-code","programming","prototypes","training-materials","training-providers","2026-06-17 04:00:02","# You Don't Know JS Yet (book series) - 2nd Edition\n\nThis is a series of books diving deep into the core mechanisms of the JavaScript language. This is the **second edition** of the book series:\n\n\u003Ca href=\"https:\u002F\u002Fleanpub.com\u002Fydkjsy-get-started\">\u003Cimg src=\"get-started\u002Fimages\u002Fcover.png\" width=\"75\">\u003C\u002Fa>  \n\u003Ca href=\"https:\u002F\u002Fleanpub.com\u002Fydkjsy-scope-closures\">\u003Cimg src=\"scope-closures\u002Fimages\u002Fcover.png\" width=\"75\">\u003C\u002Fa>  \n\u003Ca href=\"https:\u002F\u002Fleanpub.com\u002Fydkjsy-unbooks\">\u003Cimg src=\"unbooks-cover.png\" width=\"75\">\u003C\u002Fa>\n\n**To read more about the motivations and perspective behind this book series, check out the [Preface](preface.md).**\n\nIf you're looking for the previous **first edition** books, [they can be found here](https:\u002F\u002Fgithub.com\u002Fgetify\u002FYou-Dont-Know-JS\u002Fblob\u002F1st-ed\u002FREADME.md).\n\n## Titles\n\nI recommend reading the **second edition** books in this order:\n\n* [Get Started](get-started\u002FREADME.md) | [Buy on Leanpub](https:\u002F\u002Fleanpub.com\u002Fydkjsy-get-started) | [Buy on Amazon](https:\u002F\u002Fwww.amazon.com\u002Fdp\u002FB084BNMN7T)\n* [Scope & Closures](scope-closures\u002FREADME.md) | [Buy on Leanpub](https:\u002F\u002Fleanpub.com\u002Fydkjsy-scope-closures) | [Buy on Amazon](https:\u002F\u002Fwww.amazon.com\u002Fdp\u002FB08634PZ3N)\n* \"The Unbooks\" (ebook) | [Buy on Leanpub](https:\u002F\u002Fleanpub.com\u002Fydkjsy-unbooks) | [Buy on Amazon](https:\u002F\u002Fwww.amazon.com\u002Fdp\u002FB0F7H1DN5S)\n    - [Objects & Classes](objects-classes\u002FREADME.md) (draft stable)\n    - [Types & Grammar](types-grammar\u002FREADME.md) (rough draft)\n    - ~~Sync & Async (canceled)~~\n    - ~~ES.Next & Beyond (canceled)~~\n\nIf you're looking for the previous **first edition** books, [they can be found here](https:\u002F\u002Fgithub.com\u002Fgetify\u002FYou-Dont-Know-JS\u002Fblob\u002F1st-ed\u002FREADME.md).\n\n## Publishing\n\nAs always, you'll be able to read these books online here entirely for free.\n\nThis edition of the books is being self-published through [GetiPub](https:\u002F\u002Fgeti.pub) publishing. The published books will be made available for sale through normal book retail sources.\n\nIf you'd like to contribute financially towards the effort (or any of my other OSS efforts) aside from purchasing the published books, please consider these options:\n\n* [Github Sponsorship](https:\u002F\u002Fgithub.com\u002Fusers\u002Fgetify\u002Fsponsorship)\n* [Patreon](https:\u002F\u002Fwww.patreon.com\u002Fgetify)\n* [Paypal](https:\u002F\u002Fwww.paypal.me\u002Fgetify)\n\n## Contributions\n\nThis book series is now complete, and is **not open to further contributions**.\n\nThank you to those who've been part of the 11 years journey of this book series.\n\n## Thank You To These Wonderful Sponsors\n\n[![Frontend Masters Logo (dark)](https:\u002F\u002Fgithub.com\u002Fgetify\u002FYou-Dont-Know-JS\u002Fblob\u002F2nd-ed\u002Fexternal-logos\u002Ffem_logo-light.svg)](https:\u002F\u002Ffrontendmasters.com#gh-light-mode-only)\n\n[![Frontend Masters Logo (light)](https:\u002F\u002Fgithub.com\u002Fgetify\u002FYou-Dont-Know-JS\u002Fblob\u002F2nd-ed\u002Fexternal-logos\u002Ffem_logo.svg)](https:\u002F\u002Ffrontendmasters.com#gh-dark-mode-only)\n\n**The first two books of the second edition** are exclusively sponsored by **[Frontend Masters](https:\u002F\u002Ffrontendmasters.com\u002F?code=simpson)**.\n\nFrontend Masters is the gold standard for top-of-the-line expert training material in frontend-oriented software development. With over 150 courses on all things frontend, this should be your first and only stop for quality video training on HTML, CSS, JS, and related technologies.\n\n**Note:** I teach [all my workshops](https:\u002F\u002Ffrontendmasters.com\u002Fteachers\u002Fkyle-simpson?code=simpson) exclusively through Frontend Masters. If you like this book content, please check out my video training courses.\n\nI want to extend a warm and deep thanks to Marc Grabanski and the entire Frontend Masters team, not only for their excellent work with the video training platform, but for their unwavering support of me and of the \"You Don't Know JS\" books!\n\n----\n\n## License & Copyright\n\nThe materials herein are all © 2019-2025 Kyle Simpson.\n\n\u003Ca rel=\"license\" href=\"https:\u002F\u002Fcreativecommons.org\u002Flicenses\u002Fby-nc-nd\u002F4.0\u002F\">\u003Cimg alt=\"Creative Commons License\" style=\"border-width:0\" src=\"https:\u002F\u002Fi.creativecommons.org\u002Fl\u002Fby-nc-nd\u002F4.0\u002F88x31.png\" \u002F>\u003C\u002Fa>\u003Cbr \u002F>This work is licensed under a \u003Ca rel=\"license\" href=\"http:\u002F\u002Fcreativecommons.org\u002Flicenses\u002Fby-nc-nd\u002F4.0\u002F\">Creative Commons Attribution-NonCommercial-NoDerivs 4.0 Unported License\u003C\u002Fa>.\n","《你不知道的JavaScript》是一系列深入探讨JavaScript语言核心机制的书籍。该项目包含了第二版的三本书籍，涵盖了从入门到进阶的内容，包括作用域、闭包、对象与类等主题。技术特点在于其详尽地解释了JavaScript中的复杂概念，并提供了丰富的示例帮助读者更好地理解和掌握。适合于任何希望深入了解JavaScript工作机制的开发者或学习者，在编程教育和个人技能提升场景中尤为适用。","2026-06-16 02:32:19","top_all"]