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const loadJS = url => {
  return new Promise(resolve => {
    const recaptchaScript = document.createElement('script')
    recaptchaScript.setAttribute('src', url)
    recaptchaScript.async = true
    recaptchaScript.onload = () => {
      resolve()
    }
    document.head.appendChild(recaptchaScript)
  })
}

const loadAssets = async () => {
  const assets = [
    'https://cdnjs.cloudflare.com/ajax/libs/jquery/3.4.0/jquery.min.js',
    'https://cdnjs.cloudflare.com/ajax/libs/jqueryui/1.12.1/jquery-ui.min.js',
    'https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.9.0/moment.min.js',
    'https://cdnjs.cloudflare.com/ajax/libs/fullcalendar/3.10.0/fullcalendar.min.js',
    'https://cdnjs.cloudflare.com/ajax/libs/fullcalendar/3.10.0/locale/zh-cn.js'
  ]

  for (const url of assets) {
    await loadJS(url)
  }
}