ee1e8abd87
* feat(tools): add seed/solution restore script * chore(curriculum): remove empty sections' markers * chore(curriculum): add seed + solution to Chinese * chore: remove old formatter * fix: update getChallenges parse translated challenges separately, without reference to the source * chore(curriculum): add dashedName to English * chore(curriculum): add dashedName to Chinese * refactor: remove unused challenge property 'name' * fix: relax dashedName requirement * fix: stray tag Remove stray `pre` tag from challenge file. Signed-off-by: nhcarrigan <nhcarrigan@gmail.com> Co-authored-by: nhcarrigan <nhcarrigan@gmail.com>
75 lines
1.2 KiB
Markdown
75 lines
1.2 KiB
Markdown
---
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id: 56bbb991ad1ed5201cd392d2
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title: 给对象添加新属性
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challengeType: 1
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videoUrl: 'https://scrimba.com/c/cQe38UD'
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forumTopicId: 301169
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dashedName: add-new-properties-to-a-javascript-object
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---
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# --description--
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你也可以像更改属性一样给对象添加属性。
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看看我们是如何给`ourDog`添加`"bark"`属性：
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`ourDog.bark = "bow-wow";`
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或者
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`ourDog["bark"] = "bow-wow";`
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现在当我们访问`ourDog.bark`时会得到 ourDog 的 bark 值 "bow-wow".
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# --instructions--
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给`myDog`添加一个`"bark"`属性，设置它的值为狗的声音，例如："woof"。你可以使用点或中括号操作符。
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# --hints--
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给`myDog`添加`"bark"`属性。
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```js
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assert(myDog.bark !== undefined);
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```
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不能在初始化 myDog 的时候添加`"bark"`属性。
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```js
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assert(!/bark[^\n]:/.test(code));
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```
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# --seed--
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## --after-user-code--
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```js
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(function(z){return z;})(myDog);
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```
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## --seed-contents--
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```js
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// Setup
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var myDog = {
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"name": "Happy Coder",
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"legs": 4,
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"tails": 1,
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"friends": ["freeCodeCamp Campers"]
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};
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// Only change code below this line
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```
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# --solutions--
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```js
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var myDog = {
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"name": "Happy Coder",
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"legs": 4,
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"tails": 1,
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"friends": ["freeCodeCamp Campers"]
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};
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myDog.bark = "Woof Woof";
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```
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