* fix: move "Explore Differences Between..." to basic JS, update seed and tests * fix: resequence "Declare String Variables" * fix: move "Declare a Read-Only Variable..." to basic JS, update seed and tests * fix: revert changes to non-English "Explore Differences Between..." test text * fix: revert test strings, solutions, and seeds for non-English challenges * fix: update "Declare String Variables" description * fix: sync quotation marks in description and seed * fix: modify note in "Declare a Read-Only..." challenge * fix: update operator and compound assignment challenges * fix: update string challenges * fix: update array and array method challenges * fix: update function and scope challenges, resequence slightly * fix: "Word Blanks" solution * fix: add spacing to seed * fix: concatenating += challenge spacing * fix: appending variables to strings spacing * fix: find the length of a string spacing * fix: removed instances of removedFromMyArray = 0 * fix: switch challenges * fix: function argument and param spacing * fix: update counting cards, object challenges, and record collection * fix: finish rest of Basic JS section * fix: introducing else statements solution * fix: update spacing and wording * fix: update wording for const challenge * fix: update functional programming challenges * fix: intermediate algorithms and cert challenges * fix: revert some spacing and remove comments for fp challenge solutions * feat: add notes with links to moved let and const challenges in first two es6 challenges * fix: update es6 intro text * Update curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/concatenating-strings-with-the-plus-equals-operator.md Co-authored-by: Shaun Hamilton <shauhami020@gmail.com> * Update curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/finding-a-remainder-in-javascript.md Co-authored-by: Shaun Hamilton <shauhami020@gmail.com> * Update curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/global-scope-and-functions.md Co-authored-by: Shaun Hamilton <shauhami020@gmail.com> * Update curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/iterate-through-an-array-with-a-for-loop.md Co-authored-by: Shaun Hamilton <shauhami020@gmail.com> * Update curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/iterate-through-an-array-with-a-for-loop.md Co-authored-by: Shaun Hamilton <shauhami020@gmail.com> * Update curriculum/challenges/english/02-javascript-algorithms-and-data-structures/functional-programming/implement-map-on-a-prototype.md Co-authored-by: Shaun Hamilton <shauhami020@gmail.com> * Update curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/declare-a-read-only-variable-with-the-const-keyword.md Co-authored-by: Shaun Hamilton <shauhami020@gmail.com> * fix: concatenating strings with plus operator seed * fix: add comments back to Declare a Read-Only Variable... seed * feat: add es6 to basic javascript redirect tests for let and const challenges * fix: revert "Concatenating Strings with Plus Operator" seed * fix: move test file to cypress/integration/learn/redirects, separate redirect tests Co-authored-by: Shaun Hamilton <shauhami020@gmail.com>
		
			
				
	
	
		
			101 lines
		
	
	
		
			1.9 KiB
		
	
	
	
		
			Markdown
		
	
	
	
	
	
			
		
		
	
	
			101 lines
		
	
	
		
			1.9 KiB
		
	
	
	
		
			Markdown
		
	
	
	
	
	
---
 | 
						|
id: 56533eb9ac21ba0edf2244cc
 | 
						|
title: Accessing Nested Objects
 | 
						|
challengeType: 1
 | 
						|
videoUrl: 'https://scrimba.com/c/cRnRnfa'
 | 
						|
forumTopicId: 16161
 | 
						|
dashedName: accessing-nested-objects
 | 
						|
---
 | 
						|
 | 
						|
# --description--
 | 
						|
 | 
						|
The sub-properties of objects can be accessed by chaining together the dot or bracket notation.
 | 
						|
 | 
						|
Here is a nested object:
 | 
						|
 | 
						|
```js
 | 
						|
const ourStorage = {
 | 
						|
  "desk": {
 | 
						|
    "drawer": "stapler"
 | 
						|
  },
 | 
						|
  "cabinet": {
 | 
						|
    "top drawer": { 
 | 
						|
      "folder1": "a file",
 | 
						|
      "folder2": "secrets"
 | 
						|
    },
 | 
						|
    "bottom drawer": "soda"
 | 
						|
  }
 | 
						|
};
 | 
						|
 | 
						|
ourStorage.cabinet["top drawer"].folder2;
 | 
						|
ourStorage.desk.drawer;
 | 
						|
```
 | 
						|
 | 
						|
`ourStorage.cabinet["top drawer"].folder2` would be the string `secrets`, and `ourStorage.desk.drawer` would be the string `stapler`.
 | 
						|
 | 
						|
# --instructions--
 | 
						|
 | 
						|
Access the `myStorage` object and assign the contents of the `glove box` property to the `gloveBoxContents` variable. Use dot notation for all properties where possible, otherwise use bracket notation.
 | 
						|
 | 
						|
# --hints--
 | 
						|
 | 
						|
`gloveBoxContents` should equal the string `maps`.
 | 
						|
 | 
						|
```js
 | 
						|
assert(gloveBoxContents === 'maps');
 | 
						|
```
 | 
						|
 | 
						|
Your code should use dot and bracket notation to access `myStorage`.
 | 
						|
 | 
						|
```js
 | 
						|
assert(/=\s*myStorage\.car\.inside\[\s*("|')glove box\1\s*\]/g.test(code));
 | 
						|
```
 | 
						|
 | 
						|
# --seed--
 | 
						|
 | 
						|
## --after-user-code--
 | 
						|
 | 
						|
```js
 | 
						|
(function(x) { 
 | 
						|
  if(typeof x != 'undefined') { 
 | 
						|
    return "gloveBoxContents = " + x;
 | 
						|
  }
 | 
						|
  return "gloveBoxContents is undefined";
 | 
						|
})(gloveBoxContents);
 | 
						|
```
 | 
						|
 | 
						|
## --seed-contents--
 | 
						|
 | 
						|
```js
 | 
						|
const myStorage = {
 | 
						|
  "car": {
 | 
						|
    "inside": {
 | 
						|
      "glove box": "maps",
 | 
						|
      "passenger seat": "crumbs"
 | 
						|
     },
 | 
						|
    "outside": {
 | 
						|
      "trunk": "jack"
 | 
						|
    }
 | 
						|
  }
 | 
						|
};
 | 
						|
 | 
						|
const gloveBoxContents = undefined;
 | 
						|
```
 | 
						|
 | 
						|
# --solutions--
 | 
						|
 | 
						|
```js
 | 
						|
const myStorage = {
 | 
						|
  "car":{
 | 
						|
    "inside":{
 | 
						|
      "glove box":"maps",
 | 
						|
      "passenger seat":"crumbs"
 | 
						|
    },
 | 
						|
    "outside":{
 | 
						|
      "trunk":"jack"
 | 
						|
    }
 | 
						|
  }
 | 
						|
};
 | 
						|
const gloveBoxContents = myStorage.car.inside["glove box"];
 | 
						|
```
 |