JavaScript: Create a function that gets the argument at index n. If n is negative, the nth argument from the end is returned

JavaScript fundamental (ES6 Syntax): Exercise-92 with Solution

Write a JavaScript program to create a function that gets the argument at index n. If n is negative, the nth argument from the end is returned.

• Use Array.prototype.slice() to get the desired argument at index n.
• If n is negative, the nth argument from the end is returned.

Sample Solution:

JavaScript Code:

//#Source https://bit.ly/2neWfJ2 
const nthArg = n => (...args) => args.slice(n)[0];
const third = nthArg(2);
third(1, 2, 3); // 3
third(1, 2); // undefined
const last = nthArg(-1);
console.log(last(1, 2, 3, 4, 5));

Sample Output:

5

Flowchart:

Live Demo:

See the Pen javascript-basic-exercise-92-1 by w3resource (@w3resource) on CodePen.

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