ee1e8abd87
* feat(tools): add seed/solution restore script * chore(curriculum): remove empty sections' markers * chore(curriculum): add seed + solution to Chinese * chore: remove old formatter * fix: update getChallenges parse translated challenges separately, without reference to the source * chore(curriculum): add dashedName to English * chore(curriculum): add dashedName to Chinese * refactor: remove unused challenge property 'name' * fix: relax dashedName requirement * fix: stray tag Remove stray `pre` tag from challenge file. Signed-off-by: nhcarrigan <nhcarrigan@gmail.com> Co-authored-by: nhcarrigan <nhcarrigan@gmail.com>
67 lines
1.5 KiB
Markdown
67 lines
1.5 KiB
Markdown
---
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id: bd7123c9c452eddfaeb5bdef
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title: Use Bracket Notation to Find the Nth-to-Last Character in a String
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challengeType: 1
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videoUrl: 'https://scrimba.com/c/cw4vkh9'
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forumTopicId: 18344
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dashedName: use-bracket-notation-to-find-the-nth-to-last-character-in-a-string
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---
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# --description--
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You can use the same principle we just used to retrieve the last character in a string to retrieve the Nth-to-last character.
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For example, you can get the value of the third-to-last letter of the `var firstName = "Charles"` string by using `firstName[firstName.length - 3]`
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Example:
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```js
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var firstName = "Charles";
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var thirdToLastLetter = firstName[firstName.length - 3]; // thirdToLastLetter is "l"
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```
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# --instructions--
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Use <dfn>bracket notation</dfn> to find the second-to-last character in the `lastName` string.
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**Hint:** Try looking at the example above if you get stuck.
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# --hints--
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`secondToLastLetterOfLastName` should be "c".
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```js
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assert(secondToLastLetterOfLastName === 'c');
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```
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You should use `.length` to get the second last letter.
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```js
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assert(code.match(/\.length/g).length > 0);
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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(v){return v;})(secondToLastLetterOfLastName);
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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 lastName = "Lovelace";
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// Only change code below this line
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var secondToLastLetterOfLastName = lastName; // Change this line
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```
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# --solutions--
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```js
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var lastName = "Lovelace";
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var secondToLastLetterOfLastName = lastName[lastName.length - 2];
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```
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