---
id: 587d7daf367417b2b2512b7d
title: Iterate Over All Properties
localeTitle: Iterar sobre todas las propiedades
challengeType: 1
---
## Description
Ahora ha visto dos tipos de propiedades: propiedades own y propiedades de prototype . Own propiedades Own se definen directamente en la instancia del objeto en sí. Y las propiedades del prototype se definen en el prototype .
function Bird(name) {
this.name = name; //own property
}
Bird.prototype.numLegs = 2; // prototype property
let duck = new Bird("Donald");
Así es como se agregan duck's propiedades own duck's a la matriz ownProps y las propiedades de prototype a la matriz prototypeProps :
let ownProps = [];
let prototypeProps = [];
for (let property in duck) {
if(duck.hasOwnProperty(property)) {
ownProps.push(property);
} else {
prototypeProps.push(property);
}
}
console.log(ownProps); // prints ["name"]
console.log(prototypeProps); // prints ["numLegs"]
## Instructions
Agregue todas las propiedades own de beagle a la matriz ownProps . Agregue todas las propiedades prototype de Dog a la matriz prototypeProps .
## Tests
```yml
tests:
- text: La matriz ownProps debe incluir "name" .
testString: 'assert(ownProps.indexOf("name") !== -1, "The ownProps array should include "name".");'
- text: La matriz prototypeProps debe incluir "numLegs" .
testString: 'assert(prototypeProps.indexOf("numLegs") !== -1, "The prototypeProps array should include "numLegs".");'
- text: Resuelva este desafío sin usar el método Object.keys() .
testString: 'assert(!/\Object.keys/.test(code), "Solve this challenge without using the built in method Object.keys().");'
```
## Challenge Seed
```js
function Dog(name) {
this.name = name;
}
Dog.prototype.numLegs = 4;
let beagle = new Dog("Snoopy");
let ownProps = [];
let prototypeProps = [];
// Add your code below this line
```
## Solution
```js
function Dog(name) {
this.name = name;
}
Dog.prototype.numLegs = 4;
let beagle = new Dog("Snoopy");
let ownProps = [];
let prototypeProps = [];
for (let prop in beagle) {
if (beagle.hasOwnProperty(prop)) {
ownProps.push(prop);
} else {
prototypeProps.push(prop);
}
}
```