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                [TOC] > http://exploringjs.com/es2018-es2019/toc.html # 關于本書 主要包含內容: - ECMAScript 2018 - ECMAScript 2019 該書僅包含這些內容,如果要查看其他內容,請到這里:http://exploringjs.com/ 查看我的其他書籍。 <h3 style="background-color: #FFFF66;border-bottom: thin solid lightgray;">本書尚未完成</h3> “探索 ES2018 和 ES2019”是一本還在持續更新的書。更多內容仍有待發布: - ES2018:ES2018 的相關特性已經完成,本書中進行了描述。 - ES2019:正在進行中。我在[博文](http://2ality.com/2018/02/ecmascript-2019.html)中跟蹤未來可能出現的一些特性。確認 ES2019 的特性后,本書會對其進行說明講解。 現在購買這本書,免費獲得未來所有的更新! ## ECMASCRIPT 2018 ### Asynchronous iteration Asynchronous iteration `for-await-of` Asynchronous generators Examples WHATWG Streams are async iterables The specification of asynchronous iteration Alternatives to async iteration Further reading ### Rest/Spread Properties The rest operator (`...`) in object destructuring The spread operator (`...`) in object literals Common use cases for the object spread operator Spreading objects versus Object.assign() ### RegExp named capture groups Numbered capture groups Named capture groups Backreferences `replace()` and named capture groups Named groups that don’t match Implementations Further reading ### RegExp Unicode property escapes Overview Unicode character properties Unicode property escapes for regular expressions Examples Trying it out Further reading ### RegExp lookbehind assertions Lookahead assertions Lookbehind assertions Conclusions Further reading ### `s` (dotAll) flag for regular expressions Overview Limitations of the dot (`.`) in regular expressions The proposal FAQ ### Promise.prototype.finally() How does it work? Use case `.finally()` is similar to `finally {}` in synchronous code Availability Further reading ### Template Literal Revision Tag functions and escape sequences Problem: some text is illegal after backslashes Solution III。ECMAScript 2019. 13\. array.prototype。{flat,flatmap} 13.1。概述 13.2。有關.flatmap()的更多信息 13.3。用例:同時過濾和映射 13.4。用例:映射到多個值 13.5。其他版本的.flatmap() 13.6。有關.flat()的更多信息 13.7。常問問題 13.8。進一步閱讀 14\. object.fromentries() 14.1。object.fromentries()vs. object.entries() 14.2。例子 14.3。一個實施 14.4。有關Object.fromentries()的更多詳細信息 15\. string.prototype。{trimstart,trimend} 15.1。字符串方法.trimstart()和.trimend() 15.2。遺留字符串方法:.trimleft()和.trimright() 15.3。什么人稱計數為空格? 16.符號.prototype.description. 17.可選的捕獲約束力 17.1。概述 17.2。用例 17.3。進一步閱讀 18.穩定的array.prototype.sort() 19.成熟的json.stringify 20\. JSON超牌 21\. function.prototype.tostring修訂版 21.1。算法
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