97 lines
1.4 KiB
Markdown
97 lines
1.4 KiB
Markdown
---
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id: 56bbb991ad1ed5201cd392d3
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title: 删除对象的属性
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challengeType: 1
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videoUrl: 'https://scrimba.com/c/cDqKdTv'
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forumTopicId: 17560
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dashedName: delete-properties-from-a-javascript-object
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---
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# --description--
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我们同样可以删除对象的属性，例如：
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```js
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delete ourDog.bark;
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```
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例如：
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```js
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const 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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"bark": "bow-wow"
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};
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delete ourDog.bark;
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```
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在上面代码的最后一行中，`ourDog` 是这样的：
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```js
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{
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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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```
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# --instructions--
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删除 `myDog` 对象的 `tails` 属性。 可以使用点操作符或者中括号操作符。
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# --hints--
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应该从 `myDog` 中删除 `tails` 属性。
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```js
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assert(typeof myDog === 'object' && myDog.tails === undefined);
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```
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不要修改 `myDog` 的初始化代码。
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```js
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assert(code.match(/"tails": 1/g).length > 0);
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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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const 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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"bark": "woof"
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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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const 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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"bark": "woof"
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};
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delete myDog.tails;
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```
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