ee1e8abd87
* feat(tools): add seed/solution restore script * chore(curriculum): remove empty sections' markers * chore(curriculum): add seed + solution to Chinese * chore: remove old formatter * fix: update getChallenges parse translated challenges separately, without reference to the source * chore(curriculum): add dashedName to English * chore(curriculum): add dashedName to Chinese * refactor: remove unused challenge property 'name' * fix: relax dashedName requirement * fix: stray tag Remove stray `pre` tag from challenge file. Signed-off-by: nhcarrigan <nhcarrigan@gmail.com> Co-authored-by: nhcarrigan <nhcarrigan@gmail.com>
74 lines
1.5 KiB
Markdown
74 lines
1.5 KiB
Markdown
---
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id: 587d7db4367417b2b2512b92
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title: Extract Matches
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challengeType: 1
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forumTopicId: 301340
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dashedName: extract-matches
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---
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# --description--
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So far, you have only been checking if a pattern exists or not within a string. You can also extract the actual matches you found with the `.match()` method.
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To use the `.match()` method, apply the method on a string and pass in the regex inside the parentheses.
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Here's an example:
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```js
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"Hello, World!".match(/Hello/);
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// Returns ["Hello"]
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let ourStr = "Regular expressions";
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let ourRegex = /expressions/;
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ourStr.match(ourRegex);
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// Returns ["expressions"]
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```
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Note that the `.match` syntax is the "opposite" of the `.test` method you have been using thus far:
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```js
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'string'.match(/regex/);
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/regex/.test('string');
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```
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# --instructions--
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Apply the `.match()` method to extract the word `coding`.
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# --hints--
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The `result` should have the word `coding`
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```js
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assert(result.join() === 'coding');
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```
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Your regex `codingRegex` should search for `coding`
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```js
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assert(codingRegex.source === 'coding');
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```
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You should use the `.match()` method.
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```js
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assert(code.match(/\.match\(.*\)/));
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```
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# --seed--
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## --seed-contents--
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```js
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let extractStr = "Extract the word 'coding' from this string.";
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let codingRegex = /change/; // Change this line
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let result = extractStr; // Change this line
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```
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# --solutions--
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```js
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let extractStr = "Extract the word 'coding' from this string.";
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let codingRegex = /coding/; // Change this line
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let result = extractStr.match(codingRegex); // Change this line
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```
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