waline 懒加载

waline.ejs

<div id="talkmoe"></div>
<script type="text/javascript">
loadComments();
function loadComments() {
  if (typeof Waline === 'undefined') {
    var getScript = (options) => {
      var script = document.createElement('script');
      script.defer = true;
      script.crossOrigin = 'anonymous';
      Object.keys(options).forEach((key) => {
          script[key] = options[key];
      });
      document.body.appendChild(script);
    };
    getScript({
      src: 'https://cdn.jsdelivr.net/npm/@waline/client/dist/Waline.min.js',
      onload: () => {
        newWaline();
      }
    });
  } else {
    newWaline();
  }
}
function newWaline() {
  new Waline({
      el: '#talkmoe',
      serverURL: '<%= commentSetting.walineSetting.serverurl %>',
      placeholder:'Hello!留下你的足迹吧 ！（可直接在评论框内粘贴图片）'
  });
}
</script>