...
        {٪ for twit in twits ٪}
          <div class="twit">
            <input type="hidden" value="{{twit.User.id}}" class="twit-user-id">
            <input type="hidden" value="{{twit.id}}" class="twit-id">
            <div class="twit-author">{{twit.User.nick}}</div>
            {٪ if not followingIdList.includes(twit.User.id) and twit.User.id !== user.id ٪}
              <button class="twit-follow">팔로우하기</button>
            {٪ endif ٪}
            <div class="twit-content">{{twit.content}}</div>
            {٪ if twit.img ٪}
              <div class="twit-img">
                <img
                  src="{{twit.img}}"
                  onerror="this.src = this.src.replace(/\/thumb\//, '/original/');"
                  alt="섬네일"
                />
              </div>
            {٪ endif ٪}
          </div>
        {٪ endfor ٪}
      </div>
    </div>
{% endblock %}

{% block script %}
  <script>
    if (document.getElementById('img')) {
      document.getElementById('img').addEventListener('change', function(e) {
        const formData = new FormData();
        console.log(this, this.files);
        formData.append('img', this.files[0]);
        axios.post('/post/img', formData)
          .then((res) => {
            document.getElementById('img-url').value = res.data.url;
            document.getElementById('img-preview').src = res.data.originalUrl;
            document.getElementById('img-preview').style.display = 'inline';
          })
          .catch((err) => {
            console.error(err);
          });
      });
    }
...