Custom Constructors

最新推荐文章于 2024-08-28 06:00:00 发布

likaiwalkman_Victor

最新推荐文章于 2024-08-28 06:00:00 发布

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本文介绍如何使用自定义构造函数来创建具有预设属性的对象。通过一个具体的Person构造函数实例，展示了如何利用this关键字来设置对象的属性。

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Custom Constructors

But this approach of adding in properties one at a time for every object is tedious! Instead of always using the boring Object constructor, we can make our own constructors.

This way we can set the properties for an object right when it is created. So instead of using the Objectconstructor which is empty and has no properties, we can make our own constructors which have properties.

To see how this works, look at ourPerson constructor in lines 1–4. This constructor is used to make Personobjects. Notice it uses the keywordthis to define the name and ageproperties and set them equal to the parameters given.