* chore(learn): audit basic algorithm scripting * chore(learn): audit basic data structures * chore(learn): audit basic javascript * chore(learn): audit debugging * chore(learn): audit es6 * chore(learn): audit functional programming * chore(learn): audit intermidate algorithms * chore(learn): audit js projects * chore(learn): audit object oriented programming * chore(learn): audit regex * fix(learn): remove stray . * fix(learn): string to code * fix(learn): missed some * fix(learn): clarify strings Based on Randy's feedback, clarifies string instances where quotes were removed in favour of back ticks. * fix: apply suggestions - thanks Randy! :) Co-authored-by: Randell Dawson <5313213+RandellDawson@users.noreply.github.com> * fix: non-suggestion comments * chore(learn): remove comments from codes Removes the comments from the description and instruction code blocks to ensure that all relevant information is translatable. * fix: Apply suggestions from code review Co-authored-by: Shaun Hamilton <51722130+ShaunSHamilton@users.noreply.github.com> * fix: revert crowdin fix * Update curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-algorithm-scripting/mutations.md Co-authored-by: Randell Dawson <5313213+RandellDawson@users.noreply.github.com> * fix: Apply suggestions from code review Co-authored-by: Shaun Hamilton <51722130+ShaunSHamilton@users.noreply.github.com> * Update curriculum/challenges/english/02-javascript-algorithms-and-data-structures/es6/use-destructuring-assignment-to-assign-variables-from-arrays.md Co-authored-by: Shaun Hamilton <51722130+ShaunSHamilton@users.noreply.github.com> * fix: Apply suggestions from code review Co-authored-by: Oliver Eyton-Williams <ojeytonwilliams@gmail.com> Co-authored-by: Shaun Hamilton <51722130+ShaunSHamilton@users.noreply.github.com> * chore: change voice * fix: Christopher Nolan * fix: expressions would evaluate * fix: will -> would * Update curriculum/challenges/english/02-javascript-algorithms-and-data-structures/object-oriented-programming/add-methods-after-inheritance.md Co-authored-by: Randell Dawson <5313213+RandellDawson@users.noreply.github.com> * fix: to work to push * Update curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/iterate-with-javascript-for-loops.md Co-authored-by: Shaun Hamilton <51722130+ShaunSHamilton@users.noreply.github.com> * Update curriculum/challenges/english/02-javascript-algorithms-and-data-structures/object-oriented-programming/add-methods-after-inheritance.md Co-authored-by: Randell Dawson <5313213+RandellDawson@users.noreply.github.com> Co-authored-by: Randell Dawson <5313213+RandellDawson@users.noreply.github.com> Co-authored-by: Shaun Hamilton <51722130+ShaunSHamilton@users.noreply.github.com> Co-authored-by: Oliver Eyton-Williams <ojeytonwilliams@gmail.com>
104 lines
2.3 KiB
Markdown
104 lines
2.3 KiB
Markdown
---
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id: 56533eb9ac21ba0edf2244c8
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title: Accessing Object Properties with Bracket Notation
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challengeType: 1
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videoUrl: 'https://scrimba.com/c/cBvmEHP'
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forumTopicId: 16163
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dashedName: accessing-object-properties-with-bracket-notation
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---
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# --description--
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The second way to access the properties of an object is bracket notation (`[]`). If the property of the object you are trying to access has a space in its name, you will need to use bracket notation.
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However, you can still use bracket notation on object properties without spaces.
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Here is a sample of using bracket notation to read an object's property:
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```js
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var myObj = {
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"Space Name": "Kirk",
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"More Space": "Spock",
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"NoSpace": "USS Enterprise"
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};
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myObj["Space Name"];
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myObj['More Space'];
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myObj["NoSpace"];
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```
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`myObj["Space Name"]` would be the string `Kirk`, `myObj['More Space']` would be the string `Spock`, and `myObj["NoSpace"]` would be the string `USS Enterprise`.
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Note that property names with spaces in them must be in quotes (single or double).
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# --instructions--
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Read the values of the properties `an entree` and `the drink` of `testObj` using bracket notation and assign them to `entreeValue` and `drinkValue` respectively.
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# --hints--
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`entreeValue` should be a string
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```js
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assert(typeof entreeValue === 'string');
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```
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The value of `entreeValue` should be the string `hamburger`
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```js
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assert(entreeValue === 'hamburger');
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```
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`drinkValue` should be a string
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```js
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assert(typeof drinkValue === 'string');
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```
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The value of `drinkValue` should be the string `water`
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```js
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assert(drinkValue === 'water');
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```
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You should use bracket notation twice
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```js
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assert(code.match(/testObj\s*?\[('|")[^'"]+\1\]/g).length > 1);
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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(a,b) { return "entreeValue = '" + a + "', drinkValue = '" + b + "'"; })(entreeValue,drinkValue);
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```
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## --seed-contents--
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```js
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// Setup
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var testObj = {
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"an entree": "hamburger",
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"my side": "veggies",
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"the drink": "water"
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};
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// Only change code below this line
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var entreeValue = testObj; // Change this line
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var drinkValue = testObj; // Change this line
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```
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# --solutions--
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```js
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var testObj = {
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"an entree": "hamburger",
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"my side": "veggies",
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"the drink": "water"
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};
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var entreeValue = testObj["an entree"];
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var drinkValue = testObj['the drink'];
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```
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