In-depth understanding of javascript object-oriented objects_javascript skills

This article further analyzes and describes the in-depth understanding of JavaScript object-oriented objects. Share it with everyone for your reference. The specific analysis is as follows:

In JavaScript object-oriented programming, it can be understood that everything is an object. The example code is as follows:

Copy code The code is as follows:

Determine whether an instantiated object is a prototype object type

Copy code The code is as follows:

if(cat1 instanceof Cat){//The same judgment method as PHP
window.alert("ok");
}

I hope this article will be helpful to everyone’s JavaScript programming design.