freeCodeCamp/curriculum/challenges/english/02-javascript-algorithms-and-data-structures/regular-expressions/match-everything-but-letters-and-numbers.md

id, title, challengeType, forumTopicId, dashedName

id	title	challengeType	forumTopicId	dashedName
587d7db8367417b2b2512ba0	Match Everything But Letters and Numbers	1	301353	match-everything-but-letters-and-numbers

--description--

You've learned that you can use a shortcut to match alphanumerics [A-Za-z0-9_] using \w. A natural pattern you might want to search for is the opposite of alphanumerics.

You can search for the opposite of the \w with \W. Note, the opposite pattern uses a capital letter. This shortcut is the same as [^A-Za-z0-9_].

let shortHand = /\W/;
let numbers = "42%";
let sentence = "Coding!";
numbers.match(shortHand);
sentence.match(shortHand);

The first match call would return the value ["%"] and the second would return ["!"].

--instructions--

Use the shorthand character class \W to count the number of non-alphanumeric characters in various quotes and strings.

--hints--

Your regex should use the global flag.

assert(nonAlphabetRegex.global);

Your regex should find 6 non-alphanumeric characters in the string The five boxing wizards jump quickly..

assert(
  'The five boxing wizards jump quickly.'.match(nonAlphabetRegex).length == 6
);

Your regex should use the shorthand character to match characters which are non-alphanumeric.

assert(/\\W/.test(nonAlphabetRegex.source));

Your regex should find 8 non-alphanumeric characters in the string Pack my box with five dozen liquor jugs.

assert(
  'Pack my box with five dozen liquor jugs.'.match(nonAlphabetRegex).length == 8
);

Your regex should find 6 non-alphanumeric characters in the string How vexingly quick daft zebras jump!

assert(
  'How vexingly quick daft zebras jump!'.match(nonAlphabetRegex).length == 6
);

Your regex should find 12 non-alphanumeric characters in the string 123 456 7890 ABC def GHI jkl MNO pqr STU vwx YZ.

assert(
  '123 456 7890 ABC def GHI jkl MNO pqr STU vwx YZ.'.match(nonAlphabetRegex)
    .length == 12
);

--seed--

--seed-contents--

let quoteSample = "The five boxing wizards jump quickly.";
let nonAlphabetRegex = /change/; // Change this line
let result = quoteSample.match(nonAlphabetRegex).length;

--solutions--

let quoteSample = "The five boxing wizards_jump quickly.";
let nonAlphabetRegex = /\W/g; // Change this line
let result = quoteSample.match(nonAlphabetRegex).length;