76 lines
1.1 KiB
Markdown
76 lines
1.1 KiB
Markdown
---
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id: cf1111c1c11feddfaeb4bdef
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title: Subtract One Number from Another with JavaScript
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challengeType: 1
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videoUrl: 'https://scrimba.com/c/cP3yQtk'
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forumTopicId: 18314
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---
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## Description
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<section id='description'>
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We can also subtract one number from another.
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JavaScript uses the <code>-</code> symbol for subtraction.
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<strong>Example</strong>
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```js
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myVar = 12 - 6; // assigned 6
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```
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</section>
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## Instructions
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<section id='instructions'>
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Change the <code>0</code> so the difference is <code>12</code>.
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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: Make the variable <code>difference</code> equal 12.
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testString: assert(difference === 12);
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- text: Only subtract one number from 45.
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testString: assert(/var\s*difference\s*=\s*45\s*-\s*[0-9]*;(?!\s*[a-zA-Z0-9]+)/.test(code));
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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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var difference = 45 - 0;
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```
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</div>
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### After Test
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<div id='js-teardown'>
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```js
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(function(z){return 'difference = '+z;})(difference);
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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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var difference = 45 - 33;
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```
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</section>
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