bfa5c26288
* Use dfn tags * remove misused <dfn> tags * Revert "remove misused <dfn> tags" This reverts commit b24968a96810f618d831410ac90a0bc452ebde50. * Update curriculum/challenges/english/01-responsive-web-design/basic-html-and-html5/fill-in-the-blank-with-placeholder-text.english.md Co-Authored-By: Randell Dawson <5313213+RandellDawson@users.noreply.github.com> * Make "array" lowercase Co-Authored-By: Randell Dawson <5313213+RandellDawson@users.noreply.github.com> * Fix dfn usage * Address last dfn tags
63 lines
1.9 KiB
Markdown
63 lines
1.9 KiB
Markdown
---
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id: 587d7db6367417b2b2512b98
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title: Match Single Characters Not Specified
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challengeType: 1
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forumTopicId: 301358
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---
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## Description
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<section id='description'>
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So far, you have created a set of characters that you want to match, but you could also create a set of characters that you do not want to match. These types of character sets are called <dfn>negated character sets</dfn>.
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To create a negated character set, you place a caret character (<code>^</code>) after the opening bracket and before the characters you do not want to match.
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For example, <code>/[^aeiou]/gi</code> matches all characters that are not a vowel. Note that characters like <code>.</code>, <code>!</code>, <code>[</code>, <code>@</code>, <code>/</code> and white space are matched - the negated vowel character set only excludes the vowel characters.
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</section>
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## Instructions
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<section id='instructions'>
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Create a single regex that matches all characters that are not a number or a vowel. Remember to include the appropriate flags in the regex.
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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: Your regex <code>myRegex</code> should match 9 items.
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testString: assert(result.length == 9);
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- text: Your regex <code>myRegex</code> should use the global flag.
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testString: assert(myRegex.flags.match(/g/).length == 1);
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- text: Your regex <code>myRegex</code> should use the case insensitive flag.
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testString: assert(myRegex.flags.match(/i/).length == 1);
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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 quoteSample = "3 blind mice.";
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let myRegex = /change/; // Change this line
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let result = myRegex; // Change this line
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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 quoteSample = "3 blind mice.";
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let myRegex = /[^0-9aeiou]/gi; // Change this line
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let result = quoteSample.match(myRegex); // Change this line
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```
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</section>
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