17 lines
420 B
Markdown
17 lines
420 B
Markdown
### nthElement
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Returns the nth element of an array.
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Use `Array.slice()` to get an array containing the nth element at the first place.
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If the index is out of bounds, return `[]`.
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Omit the second argument, `n`, to get the first element of the array.
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```js
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const nthElement = (arr, n=0) => (n>0? arr.slice(n,n+1) : arr.slice(n))[0];
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```
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```js
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nthElement(['a','b','c'],1) // 'b'
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nthElement(['a','b','b'],-3) // 'a'
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```
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