freeCodeCamp/updating-object-properties.md at 4a74567986d8de748f954e8957adc7613e85193f

Oliver Eyton-Williams 4a74567986 fix: remove title from Chinese chals

2020-10-06 23:10:08 +05:30

1.9 KiB

Raw Blame History

id, challengeType, videoUrl, forumTopicId, localeTitle

id	challengeType	videoUrl	forumTopicId	localeTitle
56bbb991ad1ed5201cd392d1	1	https://scrimba.com/c/c9yEJT4	18336	更新对象属性

Description

当你创建了一个对象后，你可以用点操作符或中括号操作符来更新对象的属性。举个例子，让我们看看ourDog:

var ourDog = {
  "name": "Camper",
  "legs": 4,
  "tails": 1,
  "friends": ["everything!"]
};

让我们更改它的名称为 "Happy Camper"，这有两种方式来更新对象的name属性： ourDog.name = "Happy Camper"; 或 ourDog["name"] = "Happy Camper"; 现在，ourDog.name的值就不再是 "Camper"，而是 "Happy Camper"。

Instructions

更新myDog对象的name属性，让它的名字从 "Coder" 变成 "Happy Coder"。

Tests

tests:
  - text: 更新<code>myDog</code>的<code>"name"</code>属性, 使其等于 "Happy Coder"。
    testString: assert(/happy coder/gi.test(myDog.name));
  - text: 不要修改<code>myDog</code>的定义。
    testString: 'assert(/"name": "Coder"/.test(code));'

Challenge Seed

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

ourDog.name = "Happy Camper";

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

// Only change code below this line.

After Test

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

Solution

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

1.9 KiB Raw Blame History