f1c9b08cf3
This includes certificates (where it does nothing), but does not include any translations.
115 lines
2.1 KiB
Markdown
115 lines
2.1 KiB
Markdown
---
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id: 56533eb9ac21ba0edf2244cc
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title: Accessing Nested Objects
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challengeType: 1
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isHidden: false
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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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<section id='description'>
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The sub-properties of objects can be accessed by chaining together the dot or bracket notation.
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Here is a nested object:
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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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</section>
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## Instructions
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<section id='instructions'>
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Access the <code>myStorage</code> object and assign the contents of the <code>glove box</code> property to the <code>gloveBoxContents</code> variable. Use dot notation for all properties where possible, otherwise use bracket notation.
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</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: <code>gloveBoxContents</code> should equal "maps".
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testString: assert(gloveBoxContents === "maps");
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- text: Your code should use dot and bracket notation to access <code>myStorage</code>.
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testString: assert(/=\s*myStorage\.car\.inside\[\s*("|')glove box\1\s*\]/g.test(code));
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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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// Setup
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var myStorage = {
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"car": {
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"inside": {
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"glove box": "maps",
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"passenger seat": "crumbs"
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},
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"outside": {
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"trunk": "jack"
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}
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}
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};
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var gloveBoxContents = undefined; // Change 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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(function(x) {
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if(typeof x != 'undefined') {
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return "gloveBoxContents = " + x;
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}
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return "gloveBoxContents is undefined";
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})(gloveBoxContents);
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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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var myStorage = {
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"car":{
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"inside":{
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"glove box":"maps",
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"passenger seat":"crumbs"
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},
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"outside":{
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"trunk":"jack"
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}
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}
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};
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var gloveBoxContents = myStorage.car.inside["glove box"];
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```
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</section>
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