85 lines
3.5 KiB
Markdown
85 lines
3.5 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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---
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## Description
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<section id='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: <code>.</code>
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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.
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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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humStr.test(huRegex); // Returns true
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hugStr.test(huRegex); // Returns true
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```
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</section>
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## Instructions
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<section id='instructions'>
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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.
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</section>
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## Tests
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<section id='tests'>
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```yml
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tests:
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- text: You should use the <code>.test()</code> method.
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testString: assert(code.match(/\.test\(.*\)/));
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- text: You should use the wildcard character in your regex <code>unRegex</code>
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testString: assert(/\./.test(unRegex.source));
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- text: Your regex <code>unRegex</code> should match <code>"run"</code> in <code>"Let us go on a run."</code>
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testString: assert(unRegex.test("Let us go on a run."));
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- text: Your regex <code>unRegex</code> should match <code>"sun"</code> in <code>"The sun is out today."</code>
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testString: assert(unRegex.test("The sun is out today."));
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- text: Your regex <code>unRegex</code> should match <code>"fun"</code> in <code>"Coding is a lot of fun."</code>
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testString: assert(unRegex.test("Coding is a lot of fun."));
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- text: Your regex <code>unRegex</code> should match <code>"pun"</code> in <code>"Seven days without a pun makes one weak."</code>
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testString: assert(unRegex.test("Seven days without a pun makes one weak."));
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- text: Your regex <code>unRegex</code> should match <code>"nun"</code> in <code>"One takes a vow to be a nun."</code>
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testString: assert(unRegex.test("One takes a vow to be a nun."));
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- 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>
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testString: assert(unRegex.test("She got fired from the hot dog stand for putting her hair in a bun."));
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- text: Your regex <code>unRegex</code> should not match <code>"There is a bug in my code."</code>
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testString: assert(!unRegex.test("There is a bug in my code."));
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- text: Your regex <code>unRegex</code> should not match <code>"Catch me if you can."</code>
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testString: assert(!unRegex.test("Can me if you can."));
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```
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</section>
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## Challenge Seed
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<section id='challengeSeed'>
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<div id='js-seed'>
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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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</div>
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</section>
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## Solution
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<section id='solution'>
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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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</section>
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