quantity specifiers
using curly brackets. Sometimes you only want a specific number of matches.
To specify a certain number of patterns, just have that one number between the curly brackets.
For example, to match only the word "hah"
with the letter a
3
times, your regex would be /ha{3}h/
.
let A4 = "haaaah";
let A3 = "haaah";
let A100 = "h" + "a".repeat(100) + "h";
let multipleHA = /ha{3}h/;
multipleHA.test(A4); // Returns false
multipleHA.test(A3); // Returns true
multipleHA.test(A100); // Returns false
timRegex
to match the word "Timber"
only when it has four letter m
's.
"Timber"
testString: assert(!timRegex.test("Timber"), 'Your regex should not match "Timber"
');
- text: Your regex should not match "Timmber"
testString: assert(!timRegex.test("Timmber"), 'Your regex should not match "Timmber"
');
- text: Your regex should not match "Timmmber"
testString: assert(!timRegex.test("Timmmber"), 'Your regex should not match "Timmmber"
');
- text: Your regex should match "Timmmmber"
testString: assert(timRegex.test("Timmmmber"), 'Your regex should match "Timmmmber"
');
- text: Your regex should not match "Timber"
with 30 m
's in it.
testString: assert(!timRegex.test("Ti" + "m".repeat(30) + "ber"), 'Your regex should not match "Timber"
with 30 m
\'s in it.');
```