カスタムコンポーネントのよくある質問

function loadScript(src, callback) {
  if (!src) {
    return;
  }
  const node = document.createElement('script');
  node.src = src;
  node.addEventListener('load', callback, false);
  document.head.appendChild(node);
}
function loadCss(url) {
  const linkElement = document.createElement('link');
  linkElement.rel = 'stylesheet';
  linkElement.href = url;
  document.body.appendChild(linkElement);
}
(function loadAssets() {
  loadCss('https://dev.g.alicdn.com/yida-platform/react-cropper/1.0.0/css/react-cropper.css');
  loadScript('https://dev.g.alicdn.com/yida-platform/react-cropper/1.0.0/js/react-cropper.js', () => {
    // ここにコードを記述
  });
})();