1.9 KiB
| id | title | challengeType | forumTopicId | dashedName |
|---|---|---|---|---|
| 587d7db8367417b2b2512ba1 | Match All Non-Numbers | 1 | 301347 | 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
assert(/\\D/.test(noNumRegex.source));
Your regex should use the global flag.
assert(noNumRegex.global);
Your regex should find no non-digits in "9".
assert('9'.match(noNumRegex) == null);
Your regex should find 6 non-digits in "Catch 22".
assert('Catch 22'.match(noNumRegex).length == 6);
Your regex should find 11 non-digits in "101 Dalmatians".
assert('101 Dalmatians'.match(noNumRegex).length == 11);
Your regex should find 15 non-digits in "One, Two, Three".
assert('One, Two, Three'.match(noNumRegex).length == 15);
Your regex should find 12 non-digits in "21 Jump Street".
assert('21 Jump Street'.match(noNumRegex).length == 12);
Your regex should find 17 non-digits in "2001: A Space Odyssey".
assert('2001: A Space Odyssey'.match(noNumRegex).length == 17);
--seed--
--seed-contents--
let movieName = "2001: A Space Odyssey";
let noNumRegex = /change/; // Change this line
let result = movieName.match(noNumRegex).length;
--solutions--
let movieName = "2001: A Space Odyssey";
let noNumRegex = /\D/g; // Change this line
let result = movieName.match(noNumRegex).length;