30-seconds-of-code/snippets/nthElement.md

nthElement

Returns the nth element of an array.

Use Array.slice() to get an array containing the nth element at the first place. If the index is out of bounds, return []. Omit the second argument, n, to get the first element of the array.

const nthElement = (arr, n=0) => (n>0? arr.slice(n,n+1) : arr.slice(n))[0];

nthElement(['a','b','c'],1) // 'b'
nthElement(['a','b','b'],-3) // 'a'