2.5. Promise#catch 2.5.1. IE8的问题 2.5. Promise#catch 在 前面的Promise#then 的章节里，我们已经简单地使用了 Promise#catch 方法。 这里我们再说一遍，实际上 Promise#catch 只是 promise.then(undefined, onRejected); ...

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2. FAQ: ES2016 and ES2017 2.1 Isn’t ECMAScript 2016 too small? Please support this book: buy it (PDF, EPUB, MOBI) or donate 2. FAQ: ES2016 and ES2017 2.1 Isn’t ECMAScr...

读懂 ECMAScript 规格 读懂 ECMAScript 规格 概述 术语 抽象操作的标准流程 相等运算符 数组的空位 数组的 map 方法