保存扩展基类的类实例的 TypeScript 变量

Question

我想要一个变量来存储类实例数组，但我想将数据类型指定为从“基”类继承的任何类型。通过示例可以更好地证明这一点：

class Mom { } //Base class
class Son extends Mom { }
class Daughter extends Mom { }

//What is the syntax for this?
let example : <T extends Mom>T[] = [ ]; //This array should store anyting that extends 'Mom'

//The this would be possible
example.push(new Mom());
example.push(new Son());
example.push(new Daughter());

提前致谢。

Answer 1

试试这个方法

let example : Array<Mom> = [ ];

看这里