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>
86 lines
1.9 KiB
Markdown
86 lines
1.9 KiB
Markdown
---
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id: 587d7db8367417b2b2512ba1
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title: Match All Non-Numbers
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challengeType: 1
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forumTopicId: 301347
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dashedName: match-all-non-numbers
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---
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# --description--
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The last challenge showed how to search for digits using the shortcut `\d` with a lowercase `d`. You can also search for non-digits using a similar shortcut that uses an uppercase `D` instead.
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The shortcut to look for non-digit characters is `\D`. This is equal to the character class `[^0-9]`, which looks for a single character that is not a number between zero and nine.
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# --instructions--
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Use the shorthand character class for non-digits `\D` to count how many non-digits are in movie titles.
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# --hints--
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Your regex should use the shortcut character to match non-digit characters
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```js
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assert(/\\D/.test(noNumRegex.source));
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```
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Your regex should use the global flag.
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```js
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assert(noNumRegex.global);
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```
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Your regex should find no non-digits in `"9"`.
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```js
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assert('9'.match(noNumRegex) == null);
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```
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Your regex should find 6 non-digits in `"Catch 22"`.
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```js
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assert('Catch 22'.match(noNumRegex).length == 6);
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```
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Your regex should find 11 non-digits in `"101 Dalmatians"`.
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```js
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assert('101 Dalmatians'.match(noNumRegex).length == 11);
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```
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Your regex should find 15 non-digits in `"One, Two, Three"`.
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```js
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assert('One, Two, Three'.match(noNumRegex).length == 15);
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```
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Your regex should find 12 non-digits in `"21 Jump Street"`.
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```js
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assert('21 Jump Street'.match(noNumRegex).length == 12);
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```
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Your regex should find 17 non-digits in `"2001: A Space Odyssey"`.
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```js
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assert('2001: A Space Odyssey'.match(noNumRegex).length == 17);
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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 movieName = "2001: A Space Odyssey";
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let noNumRegex = /change/; // Change this line
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let result = movieName.match(noNumRegex).length;
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```
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# --solutions--
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```js
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let movieName = "2001: A Space Odyssey";
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let noNumRegex = /\D/g; // Change this line
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let result = movieName.match(noNumRegex).length;
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```
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