I add elements one by one. Every time I create an element, I add click listener to class. On the second time, the first class has 2 listeners.

I try to remove click listener from created elements by class name:

var kitElementPlus = document.getElementsByClassName('kitelement-plus')
for (let i = 0; i < kitElementPlus.length; i++) {
    kitElementPlus[i].removeEventListener('click', kitElementPlusFC);
};
for (let i = 0; i < kitElementPlus.length; i++) {
    kitElementPlus[i].addEventListener('click', kitElementPlusFC);
};

I still have more than one listener on previous created elements.