52 lines
1.0 KiB
Markdown
52 lines
1.0 KiB
Markdown
---
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id: 56533eb9ac21ba0edf2244cc
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title: 访问嵌套对象
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challengeType: 1
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videoUrl: 'https://scrimba.com/c/cRnRnfa'
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forumTopicId: 16161
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---
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# --description--
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通过串联起来的点操作符或中括号操作符来访问对象的嵌套属性。
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下面是一个嵌套的对象：
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```js
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var ourStorage = {
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"desk": {
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"drawer": "stapler"
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},
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"cabinet": {
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"top drawer": {
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"folder1": "a file",
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"folder2": "secrets"
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},
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"bottom drawer": "soda"
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}
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};
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ourStorage.cabinet["top drawer"].folder2; // "secrets"
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ourStorage.desk.drawer; // "stapler"
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```
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# --instructions--
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读取`myStorage`对象，将`glove box`属性的内容赋值给变量`gloveBoxContents`。在适用的地方使用点操作符来访问属性，否则使用中括号操作符。
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# --hints--
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`gloveBoxContents`应该等于"maps"。
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```js
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assert(gloveBoxContents === 'maps');
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```
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应使用点操作符和中括号操作符来访问`myStorage`。
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```js
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assert(/=\s*myStorage\.car\.inside\[\s*("|')glove box\1\s*\]/g.test(code));
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```
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# --solutions--
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