freeCodeCamp/curriculum/challenges/chinese/02-javascript-algorithms-and-data-structures/basic-javascript/delete-properties-from-a-javascript-object.md

id, title, challengeType, videoUrl, forumTopicId, localeTitle

id	title	challengeType	videoUrl	forumTopicId	localeTitle
56bbb991ad1ed5201cd392d3	Delete Properties from a JavaScript Object	1	https://scrimba.com/c/cDqKdTv	17560	删除对象的属性

Description

我们同样可以删除对象的属性，例如： delete ourDog.bark;

Instructions

删除myDog对象的"tails"属性。

Tests

tests:
  - text: 从<code>myDog</code>中删除<code>"tails"</code>属性。
    testString: assert(typeof myDog === "object" && myDog.tails === undefined);
  - text: 不要修改<code>myDog</code>的初始化。
    testString: 'assert(code.match(/"tails": 1/g).length > 1);'

Challenge Seed

// Example
var ourDog = {
  "name": "Camper",
  "legs": 4,
  "tails": 1,
  "friends": ["everything!"],
  "bark": "bow-wow"
};

delete ourDog.bark;

// Setup
var myDog = {
  "name": "Happy Coder",
  "legs": 4,
  "tails": 1,
  "friends": ["freeCodeCamp Campers"],
  "bark": "woof"
};

// Only change code below this line.

After Test

(function(z){return z;})(myDog);

Solution

var ourDog = {
  "name": "Camper",
  "legs": 4,
  "tails": 1,
  "friends": ["everything!"],
  "bark": "bow-wow"
};
var myDog = {
  "name": "Happy Coder",
  "legs": 4,
  "tails": 1,
  "friends": ["freeCodeCamp Campers"],
  "bark": "woof"
};
delete myDog.tails;