Answers for "for each get element by class"

javascript loop through class elements

var els = document.getElementsByClassName("myClass");
for(var i = 0; i < els.length; i++)
{
  console.log(els[i]);
}

javascript get all elements with class

const allElementContainGrepperClassName = document.querySelectorAll('.grepper');
// => return array of all elements 

const firstElementContainGrepperClassName = document.querySelector('.grepper');