59 lines
2.0 KiB
Markdown
59 lines
2.0 KiB
Markdown
---
|
|
id: 587d7db7367417b2b2512b9e
|
|
title: Match Ending String Patterns
|
|
challengeType: 1
|
|
---
|
|
|
|
## Description
|
|
<section id='description'>
|
|
In the last challenge, you learned to use the <code>caret</code> character to search for patterns at the beginning of strings. There is also a way to search for patterns at the end of strings.
|
|
You can search the end of strings using the <code>dollar sign</code> character <code>$</code> at the end of the regex.
|
|
<blockquote>let theEnding = "This is a never ending story";<br>let storyRegex = /story$/;<br>storyRegex.test(theEnding);<br>// Returns true<br>let noEnding = "Sometimes a story will have to end";<br>storyRegex.test(noEnding);<br>// Returns false<br></blockquote>
|
|
</section>
|
|
|
|
## Instructions
|
|
<section id='instructions'>
|
|
Use the anchor character (<code>$</code>) to match the string <code>"caboose"</code> at the end of the string <code>caboose</code>.
|
|
</section>
|
|
|
|
## Tests
|
|
<section id='tests'>
|
|
|
|
```yml
|
|
tests:
|
|
- text: You should search for <code>"caboose"</code> with the dollar sign <code>$</code> anchor in your regex.
|
|
testString: assert(lastRegex.source == "caboose$", 'You should search for <code>"caboose"</code> with the dollar sign <code>$</code> anchor in your regex.');
|
|
- text: Your regex should not use any flags.
|
|
testString: assert(lastRegex.flags == "", 'Your regex should not use any flags.');
|
|
- text: You should match <code>"caboose"</code> at the end of the string <code>"The last car on a train is the caboose"</code>
|
|
testString: assert(lastRegex.test("The last car on a train is the caboose"), 'You should match <code>"caboose"</code> at the end of the string <code>"The last car on a train is the caboose"</code>');
|
|
|
|
```
|
|
|
|
</section>
|
|
|
|
## Challenge Seed
|
|
<section id='challengeSeed'>
|
|
|
|
<div id='js-seed'>
|
|
|
|
```js
|
|
let caboose = "The last car on a train is the caboose";
|
|
let lastRegex = /change/; // Change this line
|
|
let result = lastRegex.test(caboose);
|
|
```
|
|
|
|
</div>
|
|
|
|
|
|
|
|
</section>
|
|
|
|
## Solution
|
|
<section id='solution'>
|
|
|
|
```js
|
|
// solution required
|
|
```
|
|
</section>
|