Summary Summary Objects are the center of programming in JavaScript, and ECMAScript 6 made some helpful changes to objects that both make them easier to deal with and more powe...

The Array Problem The Array Problem The JavaScript array object behaves in ways that developers couldn’t mimic in their own objects before ECMASCript 6. An array’s length prop...

1.11 Modules 1.11 Modules TypeScript also supports ECMAScript 2015 modules, which are files that contain top-level export and import directives. For this type of module the Typ...

JavaScript 语言的历史 诞生 JavaScript 与 Java 的关系 JavaScript 与 ECMAScript 的关系 JavaScript 的版本 周边大事记 参考链接 JavaScript 语言的历史 诞生 JavaScript 因为互联网而生，紧跟着浏览器的出现而问世。回顾它的历史，就要从浏览器的历史讲起。 ...

Summary Summary ECMAScript 6 classes make inheritance in JavaScript easier to use, so you don’t need to throw away any existing understanding of inheritance you might have from...

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); ...

Browser Compatibility Browser Compatibility In a certain specific case, Esprima parser intentionally does not throw an exception (indicating a syntax error) although the input ...

Browser Compatibility Browser Compatibility In a certain specific case, Esprima parser intentionally does not throw an exception (indicating a syntax error) although the input ...

JSX Support JSX Support TypeScript supports JSX transpilation and code analysis. If you are unfamiliar with JSX here is an excerpt from the official website : JSX is a XML-li...

Other Regular Expression Changes The Regular Expression y Flag Duplicating Regular Expressions The flags Property Other Regular Expression Changes Regular expressions are a...