ee1e8abd87
* feat(tools): add seed/solution restore script * chore(curriculum): remove empty sections' markers * chore(curriculum): add seed + solution to Chinese * chore: remove old formatter * fix: update getChallenges parse translated challenges separately, without reference to the source * chore(curriculum): add dashedName to English * chore(curriculum): add dashedName to Chinese * refactor: remove unused challenge property 'name' * fix: relax dashedName requirement * fix: stray tag Remove stray `pre` tag from challenge file. Signed-off-by: nhcarrigan <nhcarrigan@gmail.com> Co-authored-by: nhcarrigan <nhcarrigan@gmail.com>
118 lines
2.9 KiB
Markdown
118 lines
2.9 KiB
Markdown
---
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id: 587d7db5367417b2b2512b94
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title: Match Anything with Wildcard Period
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challengeType: 1
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forumTopicId: 301348
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dashedName: match-anything-with-wildcard-period
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---
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# --description--
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Sometimes you won't (or don't need to) know the exact characters in your patterns. Thinking of all words that match, say, a misspelling would take a long time. Luckily, you can save time using the wildcard character: `.`
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The wildcard character `.` will match any one character. The wildcard is also called `dot` and `period`. You can use the wildcard character just like any other character in the regex. For example, if you wanted to match `"hug"`, `"huh"`, `"hut"`, and `"hum"`, you can use the regex `/hu./` to match all four words.
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```js
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let humStr = "I'll hum a song";
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let hugStr = "Bear hug";
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let huRegex = /hu./;
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huRegex.test(humStr); // Returns true
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huRegex.test(hugStr); // Returns true
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```
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# --instructions--
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Complete the regex `unRegex` so that it matches the strings `"run"`, `"sun"`, `"fun"`, `"pun"`, `"nun"`, and `"bun"`. Your regex should use the wildcard character.
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# --hints--
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You should use the `.test()` method.
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```js
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assert(code.match(/\.test\(.*\)/));
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```
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You should use the wildcard character in your regex `unRegex`
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```js
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assert(/\./.test(unRegex.source));
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```
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Your regex `unRegex` should match `"run"` in `"Let us go on a run."`
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```js
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unRegex.lastIndex = 0;
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assert(unRegex.test('Let us go on a run.'));
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```
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Your regex `unRegex` should match `"sun"` in `"The sun is out today."`
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```js
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unRegex.lastIndex = 0;
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assert(unRegex.test('The sun is out today.'));
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```
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Your regex `unRegex` should match `"fun"` in `"Coding is a lot of fun."`
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```js
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unRegex.lastIndex = 0;
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assert(unRegex.test('Coding is a lot of fun.'));
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```
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Your regex `unRegex` should match `"pun"` in `"Seven days without a pun makes one weak."`
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```js
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unRegex.lastIndex = 0;
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assert(unRegex.test('Seven days without a pun makes one weak.'));
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```
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Your regex `unRegex` should match `"nun"` in `"One takes a vow to be a nun."`
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```js
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unRegex.lastIndex = 0;
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assert(unRegex.test('One takes a vow to be a nun.'));
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```
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Your regex `unRegex` should match `"bun"` in `"She got fired from the hot dog stand for putting her hair in a bun."`
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```js
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unRegex.lastIndex = 0;
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assert(
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unRegex.test(
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'She got fired from the hot dog stand for putting her hair in a bun.'
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)
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);
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```
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Your regex `unRegex` should not match `"There is a bug in my code."`
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```js
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unRegex.lastIndex = 0;
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assert(!unRegex.test('There is a bug in my code.'));
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```
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Your regex `unRegex` should not match `"Catch me if you can."`
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```js
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unRegex.lastIndex = 0;
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assert(!unRegex.test('Catch me if you can.'));
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```
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# --seed--
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## --seed-contents--
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```js
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let exampleStr = "Let's have fun with regular expressions!";
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let unRegex = /change/; // Change this line
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let result = unRegex.test(exampleStr);
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```
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# --solutions--
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```js
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let exampleStr = "Let's have fun with regular expressions!";
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let unRegex = /.un/; // Change this line
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let result = unRegex.test(exampleStr);
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```
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