JavaScript: Get the n^th element of a given array

JavaScript fundamental (ES6 Syntax): Exercise-173 with Solution

Write a JavaScript program to get the nth element of a given array of elements.

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

Sample Solution:

JavaScript Code:

//#Source https://bit.ly/2neWfJ2 
const nthElement = (arr, n = 0) => (n > 0 ? arr.slice(n, n + 1) : arr.slice(n))[0];
console.log(nthElement(['a', 'b', 'c'], 1));
console.log(nthElement(['a', 'b', 'b'], -3));

Sample Output:

b
a

Pictorial Presentation:

Flowchart:

Live Demo:

See the Pen javascript-basic-exercise-173-1 by w3resource (@w3resource) on CodePen.

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