DanH42

(function($) {
  $.fn.add = function(sep = " = ") {
    (function($this) {
      const re = /([0-9]+)/g;
      const n1 = re.exec($this.text());
      const n2 = re.exec($this.text());
      if ((n1 && n2) === null) return function(){};
      const a = parseInt(n1[0]);
      const b = parseInt(n2[0]);