Introduction and example usage of javascript prototype object

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Description

1. Each prototype object has a constructor property. This property points to the constructor itself.

In other words, person.prototype.constructor==Person.

2. Each prototype object is also an object, so the prototype object also has a _ _ proto__ property.

The _ _ proto__ property of the prototype object points to the Object prototype object.

In other words, person.prototype._to__=object.prototype.

The _ _ proto__ property of the Object prototype object points to null.

Example

/ / the constructor can write function Person (name, age) {this.name = name this.age = age} Person.prototype.say = function () {console.log ('hello,' + this.name)} let ruovan = new Person (' ruovan', 24) let composition = new Person ('composition', 24) ruovan.say () = composition.say () / / true so far, I believe you have a better understanding of "the introduction and example usage of javascript prototype objects" You might as well do it in practice. Here is the website, more related content can enter the relevant channels to inquire, follow us, continue to learn!