freeCodeCamp/curriculum/challenges/chinese/02-javascript-algorithms-and-data-structures/object-oriented-programming/iterate-over-all-properties.chinese.md

id, title, challengeType, videoUrl, localeTitle

id	title	challengeType	videoUrl	localeTitle
587d7daf367417b2b2512b7d	Iterate Over All Properties	1		迭代所有属性

Description

您现在已经看到了两种属性： own属性和prototype属性。 Own属性直接在对象实例本身上定义。和prototype属性所定义的prototype 。

function Bird（name）{
this.name = name; //拥有财产
}

Bird.prototype.numLegs = 2; //原型属性

让鸭子=新鸟（“唐纳德”）;

以下是如何将duck own属性添加到数组ownProps和prototype属性到数组prototypeProps ：

让ownProps = [];
让prototypeProps = [];

for（let duck in duck）{
if（duck.hasOwnProperty（property））{
ownProps.push（属性）;
} else {
prototypeProps.push（属性）;
}
}

的console.log（ownProps）; //打印[“名称”]
的console.log（prototypeProps）; //打印[“numLegs”]

Instructions

所有添加own的属性beagle到数组ownProps 。将Dog所有prototype属性添加到数组prototypeProps 。

Tests

tests:
  - text: <code>ownProps</code>数组应包含<code>&quot;name&quot;</code> 。
    testString: 'assert(ownProps.indexOf("name") !== -1, "The <code>ownProps</code> array should include <code>"name"</code>.");'
  - text: <code>prototypeProps</code>数组应该包含<code>&quot;numLegs&quot;</code> 。
    testString: 'assert(prototypeProps.indexOf("numLegs") !== -1, "The <code>prototypeProps</code> array should include <code>"numLegs"</code>.");'
  - text: 无需使用内置方法<code>Object.keys()</code>即可解决此挑战。
    testString: 'assert(!/\Object.keys/.test(code), "Solve this challenge without using the built in method <code>Object.keys()</code>.");'

Challenge Seed

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

// solution required