How to judge whether a property belongs to an instance object or inherits from a constructor in JS

Object Methods can learn from links https://www.jianshu.com/p/7fb0566322cf
adopt hasOwnProperty（）： Detect whether a property belongs to its own object （true）, Or inherit from the prototype chain （false）

        function Person(name,age){
    
            this.name=name
            this.age=age
        }
        Person.prototype.sex=" male "
        var p=new Person(' Zhang San ',18)
        p.phone=12345
        console.log(p);
        console.log(p.hasOwnProperty('phone'));//true
        console.log(p.hasOwnProperty('sex'));//false
        for(let i in p){
    
            if(p.hasOwnProperty(i)){
    
                console.log(p[i]);
            }
        }