SOURCE

function Person(name,age){
    this.name = name;
    this.age = age;
}
Person.prototype = {
    constructor:Person,
    infoLog:function(){
        console.log(this.name,this.age)
    }
}

const person1 = new Person("张三",20)
const person2 = new Person("李四",18)
person1.infoLog()
person2.infoLog()