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id	title	challengeType
587d7db8367417b2b2512ba1	Match All Non-Numbers	1

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.

Tests

tests:
  - text: Your regex should use the shortcut character to match non-digit characters
    testString: assert(/\\D/.test(noNumRegex.source), 'Your regex should use the shortcut character to match non-digit characters');
  - text: Your regex should use the global flag.
    testString: assert(noNumRegex.global, 'Your regex should use the global flag.');
  - text: Your regex should find no non-digits in <code>"9"</code>.
    testString: assert("9".match(noNumRegex) == null, 'Your regex should find no non-digits in <code>"9"</code>.');
  - text: Your regex should find 6 non-digits in <code>"Catch 22"</code>.
    testString: assert("Catch 22".match(noNumRegex).length == 6, 'Your regex should find 6 non-digits in <code>"Catch 22"</code>.');
  - text: Your regex should find 11 non-digits in <code>"101 Dalmatians"</code>.
    testString: assert("101 Dalmatians".match(noNumRegex).length == 11, 'Your regex should find 11 non-digits in <code>"101 Dalmatians"</code>.');
  - text: Your regex should find 15 non-digits in <code>"One, Two, Three"</code>.
    testString: assert("One, Two, Three".match(noNumRegex).length == 15, 'Your regex should find 15 non-digits in <code>"One, Two, Three"</code>.');
  - text: Your regex should find 12 non-digits in <code>"21 Jump Street"</code>.
    testString: assert("21 Jump Street".match(noNumRegex).length == 12, 'Your regex should find 12 non-digits in <code>"21 Jump Street"</code>.');
  - text: 'Your regex should find 17 non-digits in <code>"2001: A Space Odyssey"</code>.'
    testString: 'assert("2001: A Space Odyssey".match(noNumRegex).length == 17, ''Your regex should find 17 non-digits in <code>"2001: A Space Odyssey"</code>.'');'

Challenge Seed

let numString = "Your sandwich will be $5.00";
let noNumRegex = /change/; // Change this line
let result = numString.match(noNumRegex).length;

Solution

let numString = "Your sandwich will be $5.00";
let noNumRegex = /\D/g; // Change this line
let result = numString.match(noNumRegex).length;

2.9 KiB Raw Blame History