83 lines
4.4 KiB
Markdown
83 lines
4.4 KiB
Markdown
---
|
|
id: 587d7db5367417b2b2512b94
|
|
title: Match Anything with Wildcard Period
|
|
challengeType: 1
|
|
---
|
|
|
|
## Description
|
|
<section id='description'>
|
|
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: <code>.</code>
|
|
The wildcard character <code>.</code> will match any one character. The wildcard is also called <code>dot</code> and <code>period</code>. You can use the wildcard character just like any other character in the regex. For example, if you wanted to match <code>"hug"</code>, <code>"huh"</code>, <code>"hut"</code>, and <code>"hum"</code>, you can use the regex <code>/hu./</code> to match all four words.
|
|
|
|
```js
|
|
let humStr = "I'll hum a song";
|
|
let hugStr = "Bear hug";
|
|
let huRegex = /hu./;
|
|
humStr.test(huRegex); // Returns true
|
|
hugStr.test(huRegex); // Returns true
|
|
```
|
|
|
|
</section>
|
|
|
|
## Instructions
|
|
<section id='instructions'>
|
|
Complete the regex <code>unRegex</code> so that it matches the strings <code>"run"</code>, <code>"sun"</code>, <code>"fun"</code>, <code>"pun"</code>, <code>"nun"</code>, and <code>"bun"</code>. Your regex should use the wildcard character.
|
|
</section>
|
|
|
|
## Tests
|
|
<section id='tests'>
|
|
|
|
```yml
|
|
tests:
|
|
- text: You should use the <code>.test()</code> method.
|
|
testString: assert(code.match(/\.test\(.*\)/), 'You should use the <code>.test()</code> method.');
|
|
- text: You should use the wildcard character in your regex <code>unRegex</code>
|
|
testString: assert(/\./.test(unRegex.source), 'You should use the wildcard character in your regex <code>unRegex</code>');
|
|
- text: Your regex <code>unRegex</code> should match <code>"run"</code> in <code>"Let us go on a run."</code>
|
|
testString: assert(unRegex.test("Let us go on a run."), 'Your regex <code>unRegex</code> should match <code>"run"</code> in <code>"Let us go on a run."</code>');
|
|
- text: Your regex <code>unRegex</code> should match <code>"sun"</code> in <code>"The sun is out today."</code>
|
|
testString: assert(unRegex.test("The sun is out today."), 'Your regex <code>unRegex</code> should match <code>"sun"</code> in <code>"The sun is out today."</code>');
|
|
- text: Your regex <code>unRegex</code> should match <code>"fun"</code> in <code>"Coding is a lot of fun."</code>
|
|
testString: assert(unRegex.test("Coding is a lot of fun."), 'Your regex <code>unRegex</code> should match <code>"fun"</code> in <code>"Coding is a lot of fun."</code>');
|
|
- text: Your regex <code>unRegex</code> should match <code>"pun"</code> in <code>"Seven days without a pun makes one weak."</code>
|
|
testString: assert(unRegex.test("Seven days without a pun makes one weak."), 'Your regex <code>unRegex</code> should match <code>"pun"</code> in <code>"Seven days without a pun makes one weak."</code>');
|
|
- text: Your regex <code>unRegex</code> should match <code>"nun"</code> in <code>"One takes a vow to be a nun."</code>
|
|
testString: assert(unRegex.test("One takes a vow to be a nun."), 'Your regex <code>unRegex</code> should match <code>"nun"</code> in <code>"One takes a vow to be a nun."</code>');
|
|
- text: Your regex <code>unRegex</code> should match <code>"bun"</code> in <code>"She got fired from the hot dog stand for putting her hair in a bun."</code>
|
|
testString: assert(unRegex.test("She got fired from the hot dog stand for putting her hair in a bun."), 'Your regex <code>unRegex</code> should match <code>"bun"</code> in <code>"She got fired from the hot dog stand for putting her hair in a bun."</code>');
|
|
- text: Your regex <code>unRegex</code> should not match <code>"There is a bug in my code."</code>
|
|
testString: assert(!unRegex.test("There is a bug in my code."), 'Your regex <code>unRegex</code> should not match <code>"There is a bug in my code."</code>');
|
|
- text: Your regex <code>unRegex</code> should not match <code>"Catch me if you can."</code>
|
|
testString: assert(!unRegex.test("Can me if you can."), 'Your regex <code>unRegex</code> should not match <code>"Catch me if you can."</code>');
|
|
|
|
```
|
|
|
|
</section>
|
|
|
|
## Challenge Seed
|
|
<section id='challengeSeed'>
|
|
|
|
<div id='js-seed'>
|
|
|
|
```js
|
|
let exampleStr = "Let's have fun with regular expressions!";
|
|
let unRegex = /change/; // Change this line
|
|
let result = unRegex.test(exampleStr);
|
|
```
|
|
|
|
</div>
|
|
|
|
|
|
|
|
</section>
|
|
|
|
## Solution
|
|
<section id='solution'>
|
|
|
|
```js
|
|
let exampleStr = "Let's have fun with regular expressions!";
|
|
let unRegex = /.un/; // Change this line
|
|
let result = unRegex.test(exampleStr);
|
|
```
|
|
</section>
|