How to implement inheritance in js
This article mainly introduces "how to achieve inheritance in js". In daily operation, I believe many people have doubts about how to achieve inheritance in js. The editor consulted all kinds of materials and sorted out simple and easy-to-use methods of operation. I hope it will be helpful for you to answer the doubts of "how to achieve inheritance in js"! Next, please follow the editor to study!
Inheritance can be implemented in two ways
Class/extendsclass Animal {
Constructor (name) {
This.name = name
}
Hello () {
Console.log ('hello')
}
}
Class Dog extends Animal {
Constructor (name, say) {
Super (name)
This.say = say
}
} function/newfunction Animal (name) {
This.name = name
}
Animal.prototype.hello = () = > {
Console.log ('hello')
}
Function Dog (name, say) {
/ / 01 inherit attributes
Animal.call (this, name)
This.say = say
}
/ / 02 complete inheritance by connecting prototype chain
Dog.prototype = Object.create (Animal.prototype)
/ / 03 plus constructor
Dog.prototype.constructor = Dog
/ / Reflect.defineProperty (Dog.prototype, "constructor", {
/ / value: Dog
/ / enumerable: false, / / cannot be enumerated
/ / writable: true
/ /})
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