- 原型链继承
function A(name, age) {
this.name = name;
this.age = age;
}
A.prototype.getAge = (name) => name
function B(){}
B.prototype = new A()
缺点：原型链上的修改都会变成通用的
- 构造函数继承
function A(name, age) {
this.name = name;
this.age = age;
}
A.prototype.getAge = (name) => name
function B(name){
A.call(this,name)
}
const b = new B('aa')
缺点：不能继承原型链上的方法 3. 组合继承（原型+构造函数）
function A(name, age) {
this.name = name;
this.age = age;
}
A.prototype.getAge = (name) => name
function B(name){
A.call(this,name)
}
B.prototype = new A('hh')
缺点：初始化了两次
- 寄生组合继承
function A(name, age) {
this.name = name;
this.age = age;
}
A.prototype.getAge = (name) => name
function B(name){
A.call(this,name)
}
B.prototype = Object.create(A.prototype)
