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Title: GitHub - pythonfirst/es6tutorial: 《ECMAScript 6入门》是一本开源的 JavaScript 语言教程，全面介绍 ECMAScript 6 新增的语法特性。

Open Graph Title: GitHub - pythonfirst/es6tutorial: 《ECMAScript 6入门》是一本开源的 JavaScript 语言教程，全面介绍 ECMAScript 6 新增的语法特性。

X Title: GitHub - pythonfirst/es6tutorial: 《ECMAScript 6入门》是一本开源的 JavaScript 语言教程，全面介绍 ECMAScript 6 新增的语法特性。

Description: 《ECMAScript 6入门》是一本开源的 JavaScript 语言教程，全面介绍 ECMAScript 6 新增的语法特性。 - pythonfirst/es6tutorial

Open Graph Description: 《ECMAScript 6入门》是一本开源的 JavaScript 语言教程，全面介绍 ECMAScript 6 新增的语法特性。 - pythonfirst/es6tutorial

X Description: 《ECMAScript 6入门》是一本开源的 JavaScript 语言教程，全面介绍 ECMAScript 6 新增的语法特性。 - pythonfirst/es6tutorial

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