JavaScript - Find only the strings in array that contain specific letters

by jarosciak

HTML

<div id="result"></div>

JavaScript

var wordsFound = [];
var minLenght = 5;

var words = ["Volkswagen", "volley", "voltage", "volume", "volumes", "voluntarily", "voluntary", "volunteer", "volunteered", "volunteers", "Volvo", "vomit", "vomiting", "Von", "Vote", "voted", "voter", "voters", "votes", "voting", "voucher", "vouchers", "vow", "vowed", "Vowel", "vowels", "vows", "certain", "clarinet", "voyage", "VS", "vulgar", "vulnerability"];

if (typeof Array.prototype.reIndexOf === 'undefined') {
    Array.prototype.reIndexOf = function (rx) {
        for (var i in this) {
            if (this[i].toString().match(rx)) {
                return i;
            }
        }
        return -1;
    };
}

const regex = /[xclarinet]+/ig;
let m;

while ((m = regex.exec(words)) !== null) {
    if (m.index === regex.lastIndex) {
        regex.lastIndex++;
    }
    m.forEach((match, groupIndex) => {
    var word = `${match}`;
    if (word.length>minLenght) {
    wordsFound.push(word);    
    }
        //console.log(`${match}`);
    });
}

wordsFound.sort(function(a, b){
  // ASC  -> a.length - b.length
  // DESC -> b.length - a.length
  return b.length - a.length;
});

 document.getElementById("result").innerHTML = wordsFound[0];