97 lines
1.6 KiB
Markdown
97 lines
1.6 KiB
Markdown
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---
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id: 56bbb991ad1ed5201cd392d3
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title: JavaScript オブジェクトからのプロパティの削除
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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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次のようにオブジェクトからプロパティを削除することもできます。
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```js
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delete ourDog.bark;
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```
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例:
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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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上記の最後の行の後の `ourDog` は次のようになります。
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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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`tails` プロパティを `myDog` から削除してください。 ドット記法またはブラケット記法のいずれも使用できます。
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# --hints--
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プロパティ `tails` を `myDog` から削除する必要があります。
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```js
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assert(typeof myDog === 'object' && myDog.tails === undefined);
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```
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`myDog` の設定を変更しないでください。
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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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