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97 lines
2.1 KiB
Markdown
97 lines
2.1 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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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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const 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(__helpers.removeJSComments(code).match(/testObj\s*?\[('|")[^'"]+\1\]/g).length > 1);
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```
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# --seed--
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## --seed-contents--
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```js
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// Setup
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const 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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const entreeValue = testObj; // Change this line
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const drinkValue = testObj; // Change this line
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```
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# --solutions--
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```js
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const 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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const entreeValue = testObj["an entree"];
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const drinkValue = testObj['the drink'];
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```
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