Pig Latin with RegExp in JavaScript

For Pig Latin exam in Intermediate Algorithm Scripting of https://www.freecodecamp.com/challenges/pig-latin

Here is the normal solution,

function translatePigLatin(str) {
var csntArr = ["b", "c", "d", "f", "g", "h", "i", "j", "k", "l", "m", "n", "p", "q", "r", "s", "t", "v", "x", "z", "w", "y"];
var strArr = str.split("");
var newStr = "";
var i=0;
var leadCsntArr = Array();

if (csntArr.indexOf(strArr[i]) >= 0) {
while (csntArr.indexOf(strArr[i]) >= 0) {
leadCsntArr.push(strArr[i]);
++i;
}
newStr = str.substr(i) + leadCsntArr.join("") + "ay" ;
} else {
newStr = str + "way" ;
}

  return newStr;
}

translatePigLatin("consonant");

Here is the RegExp solution, it is concise and simple.  ^_^

function translatePigLatin(str) {

  var newStr = "";

  resArr = str.match(/[bcdfghijklmnpqrstvxzwy]*/);

  

  if (resArr[0] === "") {

    newStr = str + "way" ;

  } else {

    newStr = str.substr(resArr[0].length) + resArr[0] + "ay" ;

  }

  return newStr;

}

translatePigLatin("consonant");