[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); // Returns ["%"]
sentence.match(shortHand); // Returns ["!"]
\W
to count the number of non-alphanumeric characters in various quotes and strings.
"The five boxing wizards jump quickly."
.
testString: assert("The five boxing wizards jump quickly.".match(nonAlphabetRegex).length == 6, 'Your regex should find 6 non-alphanumeric characters in "The five boxing wizards jump quickly."
.');
- text: Your regex should use the shorthand character.
testString: assert(/\\W/.test(nonAlphabetRegex.source), 'Your regex should use the shorthand character to match characters which are non-alphanumeric.');
- text: Your regex should find 8 non-alphanumeric characters in "Pack my box with five dozen liquor jugs."
testString: assert("Pack my box with five dozen liquor jugs.".match(nonAlphabetRegex).length == 8, 'Your regex should find 8 non-alphanumeric characters in "Pack my box with five dozen liquor jugs."
');
- text: Your regex should find 6 non-alphanumeric characters in "How vexingly quick daft zebras jump!"
testString: assert("How vexingly quick daft zebras jump!".match(nonAlphabetRegex).length == 6, 'Your regex should find 6 non-alphanumeric characters in "How vexingly quick daft zebras jump!"
');
- text: Your regex should find 12 non-alphanumeric characters in "123 456 7890 ABC def GHI jkl MNO pqr STU vwx YZ."
testString: assert("123 456 7890 ABC def GHI jkl MNO pqr STU vwx YZ.".match(nonAlphabetRegex).length == 12, 'Your regex should find 12 non-alphanumeric characters in "123 456 7890 ABC def GHI jkl MNO pqr STU vwx YZ."
');
```