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Expand Up @@ -110,7 +110,7 @@ JavaScript语言的核心部分（不包含DOM、BOM和外部宿主对象）是

本书不会讨论ES5新增特性相关的模式，因为在本书截稿时并没有任何浏览器实现了ES5，但本书的示例代码通过一些技巧鼓励开发者向新标准转变：

- 确保所提供的示例代码在严格模式下不包错
- 确保所提供的示例代码在严格模式下不报错
- 避免使用并明确指出弃用的构造函数相关的属性和方法，比如arguments.callee
- 针对ES5中的内置模式比如Object.create()，在ES3中实现等价的模式

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