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>
59 lines
1.4 KiB
Markdown
59 lines
1.4 KiB
Markdown
---
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id: 587d7db3367417b2b2512b8e
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title: Using the Test Method
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challengeType: 1
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forumTopicId: 301369
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dashedName: using-the-test-method
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---
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# --description--
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Regular expressions are used in programming languages to match parts of strings. You create patterns to help you do that matching.
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If you want to find the word `"the"` in the string `"The dog chased the cat"`, you could use the following regular expression: `/the/`. Notice that quote marks are not required within the regular expression.
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JavaScript has multiple ways to use regexes. One way to test a regex is using the `.test()` method. The `.test()` method takes the regex, applies it to a string (which is placed inside the parentheses), and returns `true` or `false` if your pattern finds something or not.
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```js
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let testStr = "freeCodeCamp";
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let testRegex = /Code/;
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testRegex.test(testStr);
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// Returns true
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```
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# --instructions--
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Apply the regex `myRegex` on the string `myString` using the `.test()` method.
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# --hints--
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You should use `.test()` to test the regex.
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```js
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assert(code.match(/myRegex.test\(\s*myString\s*\)/));
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```
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Your result should return `true`.
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```js
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assert(result === true);
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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 myString = "Hello, World!";
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let myRegex = /Hello/;
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let result = myRegex; // Change this line
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```
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# --solutions--
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```js
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let myString = "Hello, World!";
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let myRegex = /Hello/;
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let result = myRegex.test(myString); // Change this line
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```
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