freeCodeCamp/curriculum/challenges/english/02-javascript-algorithms-and-data-structures/regular-expressions/specify-only-the-lower-number-of-matches.md

id, title, challengeType, forumTopicId, dashedName

id	title	challengeType	forumTopicId	dashedName
587d7db9367417b2b2512ba6	Specify Only the Lower Number of Matches	1	301366	specify-only-the-lower-number-of-matches

--description--

You can specify the lower and upper number of patterns with quantity specifiers using curly brackets. Sometimes you only want to specify the lower number of patterns with no upper limit.

To only specify the lower number of patterns, keep the first number followed by a comma.

For example, to match only the string hah with the letter a appearing at least 3 times, your regex would be /ha{3,}h/.

let A4 = "haaaah";
let A2 = "haah";
let A100 = "h" + "a".repeat(100) + "h";
let multipleA = /ha{3,}h/;
multipleA.test(A4);
multipleA.test(A2);
multipleA.test(A100);

In order, the three test calls would return true, false, and true.

--instructions--

Change the regex haRegex to match the word Hazzah only when it has four or more letter z's.

--hints--

Your regex should use curly brackets.

assert(haRegex.source.match(/{.*?}/).length > 0);

Your regex should not match the string Hazzah

assert(!haRegex.test('Hazzah'));

Your regex should not match the string Hazzzah

assert(!haRegex.test('Hazzzah'));

Your regex should match the string Hazzzzah

assert('Hazzzzah'.match(haRegex)[0].length === 8);

Your regex should match the string Hazzzzzah

assert('Hazzzzzah'.match(haRegex)[0].length === 9);

Your regex should match the string Hazzzzzzah

assert('Hazzzzzzah'.match(haRegex)[0].length === 10);

Your regex should match the string Hazzah with 30 z's in it.

assert('Hazzzzzzzzzzzzzzzzzzzzzzzzzzzzzzah'.match(haRegex)[0].length === 34);

--seed--

--seed-contents--

let haStr = "Hazzzzah";
let haRegex = /change/; // Change this line
let result = haRegex.test(haStr);

--solutions--

let haStr = "Hazzzzah";
let haRegex = /Haz{4,}ah/; // Change this line
let result = haRegex.test(haStr);