How to find and capitalize the first letter of the shortest word in an array?

Question

JavaScript

How to find and capitalize the first letter of the shortest word in an array? There is an implementation that capitalizes the longest word in an array, but how do you capitalize the shortest word?

class MyStr {
    ucMinWord(string) {
        let i=0;
        const wordArr=string.split(" ");
        const minString=string.substring(string.lastIndexOf(" "));
        for (i in wordArr)
        {
            if (wordArr[i].length>minString.length)
            {
                wordArr[i] = wordArr[i][0].toUpperCase() + wordArr[i].slice(1);
            }
        }
        return wordArr.join(' ')
    }
}
const app = new MyStr()
console.log(app.ucMinWord('deveveloper dev code'))

Answer 1

const index = arr.reduce((min, n, i, a) => a[min]?.length < n.length ? min : i, -1);
arr[index] = arr[index][0].toUpperCase() + arr[index].slice(1);