Shulou(Shulou.com)06/03 Report--

This article mainly introduces how to add existing attributes in the JavaScript prototype, which has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, let the editor take you to understand it.

1. Add a property or method that already exists in the prototype to the instance, which will mask the property or method of the same name in the prototype.

2. When accessing the property or method, the first thing to return is the property or method in the instance.

Example

Function Person () {} Person.prototype.name = "Default Name"; let p1 = new Person (); let p2 = new Person (); p1.name = "New Name"; console.log (p1.name); / / "New Name" console.log (p2.name) / / "Default Name" Thank you for reading this article carefully. I hope the article "how to add existing attributes to the JavaScript prototype" shared by the editor will be helpful to everyone. At the same time, I also hope that you will support and follow the industry information channel. More related knowledge is waiting for you to learn!

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