f1c9b08cf3
This includes certificates (where it does nothing), but does not include any translations.
83 lines
1.6 KiB
Markdown
83 lines
1.6 KiB
Markdown
---
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id: bd7123c9c450eddfaeb5bdef
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title: Use Bracket Notation to Find the Nth Character in a String
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challengeType: 1
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isHidden: false
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videoUrl: 'https://scrimba.com/c/cWPVJua'
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forumTopicId: 18343
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---
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## Description
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<section id='description'>
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You can also use <dfn>bracket notation</dfn> to get the character at other positions within a string.
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Remember that computers start counting at <code>0</code>, so the first character is actually the zeroth character.
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Example:
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```js
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var firstName = "Ada";
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var secondLetterOfFirstName = firstName[1]; // secondLetterOfFirstName is "d"
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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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Let's try to set <code>thirdLetterOfLastName</code> to equal the third letter of the <code>lastName</code> variable using bracket notation.
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<strong>Hint: </strong> Try looking at the example above if you get stuck.
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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: The <code>thirdLetterOfLastName</code> variable should have the value of <code>v</code>.
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testString: assert(thirdLetterOfLastName === 'v');
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- text: You should use bracket notation.
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testString: assert(code.match(/thirdLetterOfLastName\s*?=\s*?lastName\[.*?\]/));
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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 lastName = "Lovelace";
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// Only change code below this line
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var thirdLetterOfLastName = lastName; // 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(v){return v;})(thirdLetterOfLastName);
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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 lastName = "Lovelace";
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var thirdLetterOfLastName = lastName[2];
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```
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</section>
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