Javascript Hungarian accented letter remover v2

"use strict"

document.querySelector("#alakit").addEventListener("click", (evt) => {

    evt.preventDefault()


    mezo.value = alakitas(mezo.value)


})

const mezo = document.getElementById("mezo")

function alakitas(mezoadas) {


    const magyar = 'íéáűőúöüó'
    const angol = 'ieauououo'
    const magyarNagy = 'ÍÉÁŰŐÚÖÜÓ'
    const angolNagy = 'IEAUOUOUO'

    let proba = []
    const test = mezo.value
    for (let i = 0; i < test.length; i++) {
        proba.push(test[i])

        for (let j = 0; j < magyar.length; j++) {

            if (proba[i] == magyar[j]) {
                proba[i] = angol[j]



            }

            if (proba[i] == magyarNagy[j]) {
                proba[i] = angolNagy[j]



            }

        }



    }

    let fuzes = ""

    for (let fuz of proba) {

        fuzes += fuz

    }

    return fuzes


}