JavaScript基本包装类型的相关内容

文章 2017-11-27 来自：开发者社区

JavaScript----------基本包装类型

为了便于操作基本类型值，ECMAScript 提供了 3 个特殊的引用类型：Boolean、Number和 String。这些类型与其他引用类型相似，但同时也具有与各自的基本类型相应的特殊行为。实际上，每当读取一个基本类型值的时候，后台就会创建一个对应的基本包装类型的对象，从而能够调用一些方法来操作这些数据。一．基本包装类型概述 1 2 3 var box = 'Mr. Lee';/...

文章 2017-11-26 来自：开发者社区

《JavaScript 闯关记》之基本包装类型

为了便于操作基本类型值，JavaScript 还提供了3个特殊的引用类型：Boolean、Number 和 String。实际上，每当读取一个基本类型值的时候，后台就会创建一个对应的基本包装类型的对象，从而让我们能够调用一些方法来操作这些数据。来看下面的例子。 var s1 = "some text";    var s2&nb...

文章 2015-07-17 来自：开发者社区

JavaScript基本包装类型

知识点： 1.基本包装类型概述 2.Boolean类型 3.Number类型 4.String类型为了便于操作基本类型值，ECMAScript提供了3个特殊的引用类型：Boolean、Number和String。这些类型与其他引用类型相似，但同时也具有与各自的基本类型相应的特殊行为。实际上，每当读取一个基本类型值的时候，后台就会创建一个对应的基本包装类型的对象，从而能够调用一些方法来...

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更新时间 2022-09-07 10:39:03

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