Files
Nicholas Carrigan (he/him) 7117919d36 chore(learn): audit javascript algorithms and data structures (#41092)
* chore(learn): audit basic algorithm scripting

* chore(learn): audit basic data structures

* chore(learn): audit basic javascript

* chore(learn): audit debugging

* chore(learn): audit es6

* chore(learn): audit functional programming

* chore(learn): audit intermidate algorithms

* chore(learn): audit js projects

* chore(learn): audit object oriented programming

* chore(learn): audit regex

* fix(learn): remove stray .

* fix(learn): string to code

* fix(learn): missed some

* fix(learn): clarify strings

Based on Randy's feedback, clarifies string instances where quotes
were removed in favour of back ticks.

* fix: apply suggestions - thanks Randy! :)

Co-authored-by: Randell Dawson <5313213+RandellDawson@users.noreply.github.com>

* fix: non-suggestion comments

* chore(learn): remove comments from codes

Removes the comments from the description and instruction code
blocks to ensure that all relevant information is translatable.

* fix: Apply suggestions from code review

Co-authored-by: Shaun Hamilton <51722130+ShaunSHamilton@users.noreply.github.com>

* fix: revert crowdin fix

* Update curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-algorithm-scripting/mutations.md

Co-authored-by: Randell Dawson <5313213+RandellDawson@users.noreply.github.com>

* fix: Apply suggestions from code review

Co-authored-by: Shaun Hamilton <51722130+ShaunSHamilton@users.noreply.github.com>

* Update curriculum/challenges/english/02-javascript-algorithms-and-data-structures/es6/use-destructuring-assignment-to-assign-variables-from-arrays.md

Co-authored-by: Shaun Hamilton <51722130+ShaunSHamilton@users.noreply.github.com>

* fix: Apply suggestions from code review

Co-authored-by: Oliver Eyton-Williams <ojeytonwilliams@gmail.com>
Co-authored-by: Shaun Hamilton <51722130+ShaunSHamilton@users.noreply.github.com>

* chore: change voice

* fix: Christopher Nolan

* fix: expressions would evaluate

* fix: will -> would

* Update curriculum/challenges/english/02-javascript-algorithms-and-data-structures/object-oriented-programming/add-methods-after-inheritance.md

Co-authored-by: Randell Dawson <5313213+RandellDawson@users.noreply.github.com>

* fix: to work to push

* Update curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/iterate-with-javascript-for-loops.md

Co-authored-by: Shaun Hamilton <51722130+ShaunSHamilton@users.noreply.github.com>

* Update curriculum/challenges/english/02-javascript-algorithms-and-data-structures/object-oriented-programming/add-methods-after-inheritance.md

Co-authored-by: Randell Dawson <5313213+RandellDawson@users.noreply.github.com>

Co-authored-by: Randell Dawson <5313213+RandellDawson@users.noreply.github.com>
Co-authored-by: Shaun Hamilton <51722130+ShaunSHamilton@users.noreply.github.com>
Co-authored-by: Oliver Eyton-Williams <ojeytonwilliams@gmail.com>
2021-03-02 17:12:12 -07:00

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2.0 KiB
Markdown

---
id: 587d7db8367417b2b2512ba1
title: Match All Non-Numbers
challengeType: 1
forumTopicId: 301347
dashedName: match-all-non-numbers
---
# --description--
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.
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.
# --instructions--
Use the shorthand character class for non-digits `\D` to count how many non-digits are in movie titles.
# --hints--
Your regex should use the shortcut character to match non-digit characters
```js
assert(/\\D/.test(noNumRegex.source));
```
Your regex should use the global flag.
```js
assert(noNumRegex.global);
```
Your regex should find no non-digits in the string `9`.
```js
assert('9'.match(noNumRegex) == null);
```
Your regex should find 6 non-digits in the string `Catch 22`.
```js
assert('Catch 22'.match(noNumRegex).length == 6);
```
Your regex should find 11 non-digits in the string `101 Dalmatians`.
```js
assert('101 Dalmatians'.match(noNumRegex).length == 11);
```
Your regex should find 15 non-digits in the string `One, Two, Three`.
```js
assert('One, Two, Three'.match(noNumRegex).length == 15);
```
Your regex should find 12 non-digits in the string `21 Jump Street`.
```js
assert('21 Jump Street'.match(noNumRegex).length == 12);
```
Your regex should find 17 non-digits in the string `2001: A Space Odyssey`.
```js
assert('2001: A Space Odyssey'.match(noNumRegex).length == 17);
```
# --seed--
## --seed-contents--
```js
let movieName = "2001: A Space Odyssey";
let noNumRegex = /change/; // Change this line
let result = movieName.match(noNumRegex).length;
```
# --solutions--
```js
let movieName = "2001: A Space Odyssey";
let noNumRegex = /\D/g; // Change this line
let result = movieName.match(noNumRegex).length;
```