javascript - 如何获取原型(prototype)属性列表

Question

作为 Object.getOwnPropertyNames() 返回我想知道的属性数组javascript 中有返回原型(prototype)数组的函数吗？

function PersonInfo(){
    this.name=null;
    this.sex=null;
    this.age=null;
}

PersonInfo.prototype.getPersonInfo1=function(){

};

PersonInfo.prototype.getPersonInfo2=function(){

};

var pI=new PersonInfo();
//HERE we can use getOwnPropertyNames(pI) to get array of properties in PersonInfo() that result Array["name","sex","age"]
console.log(Object.getOwnPropertyNames(pI));

同样如何获取

Array["getPersonInfo1","getPersonInfo2"]

Answer 1

你可以像这样使用Object.keys

Object.keys(PersonInfo.prototype)