JavaScript整理原型的相关内容

文章 2022-04-25 来自：开发者社区

《你不知道的JavaScript》整理（四）——原型

一、[[Prototype]]JavaScript中的对象有一个特殊的[[Prototype]]内置属性，其实就是对于其他对象的引用。var myObject = { a: 2 }; myObject.a; // 2当你试图引用对象的属性时会触发原型[[Get]]操作，比如myObject.a。1. 第一步是检查对象本身是否有这个属性，如果有的话就使用它。2. 如果a不在myObject中，...

文章 2017-11-08 来自：开发者社区

《你不知道的JavaScript》整理（四）——原型

一、[[Prototype]] JavaScript中的对象有一个特殊的[[Prototype]]内置属性，其实就是对于其他对象的引用。 var myObject = { a: 2 }; myObject.a; // 2 当你试图引用对象的属性时会触发原型[[Get]]操作，比如myObject.a。 1. 第一步是检查对象本身是否有这个属性，如果有的话就使用它。 2. 如果a不在myObj...

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更新时间 2022-07-27 12:11:14

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