JS utils fragmented

import $ from "jquery";

function upVal(domArr, i) {
    
  let dom = domArr[i];  // Target element  i: Current element subscript , The first few elements 
  let max = parseFloat($(dom).attr("data-to"));  // Target value 
  let n = parseFloat($(dom).attr("data-n"));  // Increase the base 
  let initVal = parseFloat($(dom).attr("data-init"));  // Initial value 
  commentAdd(dom, initVal, max, n);
};

function commentAdd(dom, initVal, max, n) {
    
  let timer = setInterval(() => { initVal += n; let num = parseFormatNum(initVal); $(dom).text(num); if (initVal >= max) { initVal = parseFormatNum(max); $(dom).text(initVal); clearInterval(timer); } }, 1); }; // Number formatting 【 Partition 3 Numbers add commas 】 function parseFormatNum(number, n) { if (n != 0) { n = (n > 0 && n <= 20) ? n : 2; } number = parseFloat((number + "").replace(/[^\d\.-]/g, "")).toFixed(n) + "";
  let sub_val = number.split(".")[0].split("").reverse();
  let sub_xs = number.split(".")[1];
  let show_html = "";
  for (let i = 0; i < sub_val.length; i++) {
    
    show_html += sub_val[i] + ((i + 1) % 3 == 0 && (i + 1) != sub_val.length ? "," : "");
  }
  if (n == 0) {
    
    return show_html.split("").reverse().join("");
  } else {
    
    return show_html.split("").reverse().join("") + "." + sub_xs;
  }
}

export {
    upVal, parseFormatNum}