79d9012432
* fix(curriculum): tests quotes * fix(curriculum): fill seed-teardown * fix(curriculum): fix tests and remove unneeded seed-teardown
58 lines
1.8 KiB
Markdown
58 lines
1.8 KiB
Markdown
---
|
|
id: 587d7db3367417b2b2512b8e
|
|
title: Using the Test Method
|
|
challengeType: 1
|
|
---
|
|
|
|
## Description
|
|
<section id='description'>
|
|
Regular expressions are used in programming languages to match parts of strings. You create patterns to help you do that matching.
|
|
If you want to find the word <code>"the"</code> in the string <code>"The dog chased the cat"</code>, you could use the following regular expression: <code>/the/</code>. Notice that quote marks are not required within the regular expression.
|
|
JavaScript has multiple ways to use regexes. One way to test a regex is using the <code>.test()</code> method. The <code>.test()</code> method takes the regex, applies it to a string (which is placed inside the parentheses), and returns <code>true</code> or <code>false</code> if your pattern finds something or not.
|
|
<blockquote>let testStr = "freeCodeCamp";<br>let testRegex = /Code/;<br>testRegex.test(testStr);<br>// Returns true</blockquote>
|
|
</section>
|
|
|
|
## Instructions
|
|
<section id='instructions'>
|
|
Apply the regex <code>myRegex</code> on the string <code>myString</code> using the <code>.test()</code> method.
|
|
</section>
|
|
|
|
## Tests
|
|
<section id='tests'>
|
|
|
|
```yml
|
|
tests:
|
|
- text: You should use <code>.test()</code> to test the regex.
|
|
testString: assert(code.match(/myRegex.test\(\s*myString\s*\)/), 'You should use <code>.test()</code> to test the regex.');
|
|
- text: Your result should return <code>true</code>.
|
|
testString: assert(result === true, 'Your result should return <code>true</code>.');
|
|
|
|
```
|
|
|
|
</section>
|
|
|
|
## Challenge Seed
|
|
<section id='challengeSeed'>
|
|
|
|
<div id='js-seed'>
|
|
|
|
```js
|
|
let myString = "Hello, World!";
|
|
let myRegex = /Hello/;
|
|
let result = myRegex; // Change this line
|
|
```
|
|
|
|
</div>
|
|
|
|
|
|
|
|
</section>
|
|
|
|
## Solution
|
|
<section id='solution'>
|
|
|
|
```js
|
|
// solution required
|
|
```
|
|
</section>
|