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>
78 lines
1.8 KiB
Markdown
78 lines
1.8 KiB
Markdown
---
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id: 587d7db8367417b2b2512ba3
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title: Match Whitespace
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challengeType: 1
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forumTopicId: 301359
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dashedName: match-whitespace
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---
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# --description--
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The challenges so far have covered matching letters of the alphabet and numbers. You can also match the whitespace or spaces between letters.
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You can search for whitespace using `\s`, which is a lowercase `s`. This pattern not only matches whitespace, but also carriage return, tab, form feed, and new line characters. You can think of it as similar to the character class `[ \r\t\f\n\v]`.
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```js
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let whiteSpace = "Whitespace. Whitespace everywhere!"
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let spaceRegex = /\s/g;
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whiteSpace.match(spaceRegex);
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// Returns [" ", " "]
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```
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# --instructions--
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Change the regex `countWhiteSpace` to look for multiple whitespace characters in a string.
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# --hints--
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Your regex should use the global flag.
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```js
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assert(countWhiteSpace.global);
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```
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Your regex should use the shorthand character `\s` to match all whitespace characters.
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```js
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assert(/\\s/.test(countWhiteSpace.source));
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```
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Your regex should find eight spaces in `"Men are from Mars and women are from Venus."`
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```js
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assert(
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'Men are from Mars and women are from Venus.'.match(countWhiteSpace).length ==
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8
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);
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```
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Your regex should find three spaces in `"Space: the final frontier."`
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```js
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assert('Space: the final frontier.'.match(countWhiteSpace).length == 3);
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```
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Your regex should find no spaces in `"MindYourPersonalSpace"`
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```js
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assert('MindYourPersonalSpace'.match(countWhiteSpace) == null);
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```
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# --seed--
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## --seed-contents--
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```js
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let sample = "Whitespace is important in separating words";
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let countWhiteSpace = /change/; // Change this line
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let result = sample.match(countWhiteSpace);
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```
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# --solutions--
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```js
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let sample = "Whitespace is important in separating words";
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let countWhiteSpace = /\s/g;
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let result = sample.match(countWhiteSpace);
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```
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