78 lines
2.2 KiB
Markdown
78 lines
2.2 KiB
Markdown
---
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id: 56bbb991ad1ed5201cd392d1
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title: Updating Object Properties
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challengeType: 1
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videoUrl: ''
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localeTitle: 更新对象属性
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---
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## Description
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<section id="description">在创建JavaScript对象之后，您可以随时更新其属性，就像更新任何其他变量一样。您可以使用点或括号表示法进行更新。例如，让我们看看我们的<code>ourDog</code> ： <blockquote> var ourDog = { <br> “名字”：“露营者”， <br> “腿”：4， <br> “尾巴”：1， <br> “朋友们”：[“一切！”] <br> }; </blockquote>由于他是一只特别开心的狗，让我们改名为“快乐露营者”。以下是我们更新对象名称属性的方法： <code>ourDog.name = "Happy Camper";</code>或者我们的<code>ourDog["name"] = "Happy Camper";</code>现在，当我们评估我们的<code>ourDog.name</code> ，而不是获得“Camper”时，我们将获得他的新名字“Happy Camper”。 </section>
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## Instructions
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<section id="instructions">更新<code>myDog</code>对象的name属性。让我们将她的名字从“Coder”改为“Happy Coder”。您可以使用点或括号表示法。 </section>
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## Tests
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<section id='tests'>
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```yml
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tests:
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- text: 将<code>myDog</code>的<code>"name"</code>属性更新为“Happy Coder”。
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testString: 'assert(/happy coder/gi.test(myDog.name), "Update <code>myDog</code>'s <code>"name"</code> property to equal "Happy Coder".");'
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- text: 不要编辑<code>myDog</code>定义
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testString: 'assert(/"name": "Coder"/.test(code), "Do not edit the <code>myDog</code> definition");'
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```
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</section>
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## Challenge Seed
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<section id='challengeSeed'>
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<div id='js-seed'>
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```js
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// Example
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var ourDog = {
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"name": "Camper",
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"legs": 4,
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"tails": 1,
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"friends": ["everything!"]
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};
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ourDog.name = "Happy Camper";
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// Setup
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var myDog = {
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"name": "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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</div>
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### After Test
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<div id='js-teardown'>
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```js
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console.info('after the test');
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```
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</div>
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</section>
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## Solution
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<section id='solution'>
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```js
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// solution required
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```
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</section>
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