继承

这里只写寄生组合继承了，中间还有几个演变过来的继承但都有一些缺陷

function Parent (name) {
    this.name = name;
    this.colors = ['red', 'blue', 'green'];
}
Parent.prototype.getName = function () {
    console.log(this.name)
}
function Child (name, age) {
    Parent.call(this, name);
    this.age = age;
}
Child.prototype = Object.create(Parent.prototype);
Child.prototype.constructor = Child;

const child1 = new Child('kevin', '18');

console.log(child1);