loading button jquery plugin

loading.js

;(function ($) {
  $.fn.button = function (action) {
    const $btn = $(this)
    let alt_text = 'Loading'

    if (action === 'loading') {
      let original_icon = false
      $btn.attr('data-oringinal-text', $btn.text())
    if ($btn.has('i').length) original_icon = $btn.find('i').attr('class')
      $btn.attr('data-oringinal-icon', original_icon)
      $btn.html(`<i class="fas fa-spinner fa-spin"></i> ${alt_text}`)
      $btn.attr('disabled', true)
    } else {
      $btn.text($btn.attr('data-oringinal-text'))
      const icon_class = $btn.attr('data-oringinal-icon')
      if (icon_class) {
        const icon = document.createElement('i')
        icon.classList.add(...icon_class.split(' '))
        $btn.prepend(icon)
      }
      $btn.removeAttr('disabled')
    }
  }
})(jQuery);