73 lines
2.5 KiB
Markdown
73 lines
2.5 KiB
Markdown
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---
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id: a103376db3ba46b2d50db289
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title: Spinal Tap Case
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isRequired: true
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challengeType: 5
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---
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## Description
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<section id='description'>
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Convert a string to spinal case. Spinal case is all-lowercase-words-joined-by-dashes.
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Remember to use <a href='http://forum.freecodecamp.org/t/how-to-get-help-when-you-are-stuck/19514' target='_blank'>Read-Search-Ask</a> if you get stuck. Try to pair program. Write your own code.
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</section>
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## Instructions
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<section id='instructions'>
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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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- text: <code>spinalCase("This Is Spinal Tap")</code> should return <code>"this-is-spinal-tap"</code>.
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testString: 'assert.deepEqual(spinalCase("This Is Spinal Tap"), "this-is-spinal-tap", "<code>spinalCase("This Is Spinal Tap")</code> should return <code>"this-is-spinal-tap"</code>.");'
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- text: <code>spinalCase("thisIsSpinal<wbr>Tap")</code> should return <code>"this-is-spinal-tap"</code>.
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testString: 'assert.strictEqual(spinalCase("thisIsSpinalTap"), "this-is-spinal-tap", "<code>spinalCase("thisIsSpinal<wbr>Tap")</code> should return <code>"this-is-spinal-tap"</code>.");'
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- text: <code>spinalCase("The_Andy_<wbr>Griffith_Show")</code> should return <code>"the-andy-griffith-show"</code>.
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testString: 'assert.strictEqual(spinalCase("The_Andy_Griffith_Show"), "the-andy-griffith-show", "<code>spinalCase("The_Andy_<wbr>Griffith_Show")</code> should return <code>"the-andy-griffith-show"</code>.");'
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- text: <code>spinalCase("Teletubbies say Eh-oh")</code> should return <code>"teletubbies-say-eh-oh"</code>.
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testString: 'assert.strictEqual(spinalCase("Teletubbies say Eh-oh"), "teletubbies-say-eh-oh", "<code>spinalCase("Teletubbies say Eh-oh")</code> should return <code>"teletubbies-say-eh-oh"</code>.");'
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- text: <code>spinalCase("AllThe-small Things")</code> should return <code>"all-the-small-things"</code>.
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testString: 'assert.strictEqual(spinalCase("AllThe-small Things"), "all-the-small-things", "<code>spinalCase("AllThe-small Things")</code> should return <code>"all-the-small-things"</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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function spinalCase(str) {
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// "It's such a fine line between stupid, and clever."
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// --David St. Hubbins
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return str;
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}
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spinalCase('This Is Spinal Tap');
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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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function spinalCase(str) {
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// "It's such a fine line between stupid, and clever."
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// --David St. Hubbins
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str = str.replace(/([a-z](?=[A-Z]))/g, '$1 ');
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return str.toLowerCase().replace(/\ |\_/g, '-');
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}
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```
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</section>
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