code: function removeClass(element, value) {
    if (!value) {
      return;
    }
  
    if (isNumber(element.length)) {
      forEach(element, function (elem) {
        removeClass(elem, value);
      });
      return;
    }
  
    if (element.classList) {
      element.classList.remove(value);
      return;
    }
  
    if (element.className.indexOf(value) >= 0) {
      element.className = element.className.replace(value, '');
    }
  }
docs: Remove classes from the given element.
  @param {Element} element - The target element.
  @param {string} value - The classes to be removed.