md/奇思妙想/class.js

/*
 * @Description: js类测试
 * @Autor: kindring
 * @Date: 2021-09-06 16:18:22
 * @LastEditors: kindring
 * @LastEditTime: 2021-09-06 17:40:17
 * @LastDescript: 
 */
class Fn {
    constructor(id, name) {
        this.id = id
        this.name = name
    }
    say(talk) {
        console.log(`${this.name}:${talk}`);
        this.onSay({ date: new Date(), talk })
    }
    onSay() {}
}

let f = new Fn(1, '张三')
f.onSay = function(e) {
    console.log(e)
}
f.say('你好')