- 等号赋值， 属于成员变量
- 否则 为写到原型链上
- super 关键字用于访问对象字面量或类的原型（Prototype）上的属性，或调用父类的构造函数
class MyClass {
name = "MyClass"; //属于成员变量
getName = () => {
return this.name;
};
getname():string {
return this.name
}
}
class b extends MyClass {
name = 'b'
info():string {
return super.getname()
}
}
const x = new b()
console.log(x.info())会被转意成
({
607: function () {
var t,
n = this && this.__extends || (t = function (n, o) {
return t = Object.setPrototypeOf || {
__proto__: []
}
instanceof Array && function (t, n) {
t.__proto__ = n
} || function (t, n) {
for (var o in n)
Object.prototype.hasOwnProperty.call(n, o) && (t[o] = n[o])
},
t(n, o)
}, function (n, o) {
if ("function" != typeof o && null !== o)
throw new TypeError("Class extends value " + String(o) + " is not a constructor or null");
function e() {
this.constructor = n
}
t(n, o),
n.prototype = null === o ? Object.create(o) : (e.prototype = o.prototype, new e)
}),
o = function (t) {
function o() {
var n = null !== t && t.apply(this, arguments) || this;
return n.name = "b",
n
}
return n(o, t),
o.prototype.info = function () {
return t.prototype.getname.call(this)
},
o
}(function () {
function t() {
var t = this;
this.name = "MyClass",
this.getName = function () {
return t.name
}
}
return t.prototype.getname = function () {
return this.name
},
t.prototype.getage = function () {
return this.age
},
t
}()),
e = new o;
console.log(e.info())
}
})[607]();