10 lines
304 B
Markdown
10 lines
304 B
Markdown
### Array sample
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Use `Math.random()` to generate a random number, multiply it with `length` and round it of to the nearest whole number using `Math.floor()`.
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This method also works with strings.
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```js
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const sample = arr => arr[Math.floor(Math.random() * arr.length)];
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// sample([3, 7, 9, 11]) -> 9
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```
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