jQuery Multiple File Upload with Progress Bar & Preview

How to Create Multiple File Upload with Progress Bar

1. Load the jQuery, Bootstrap framework and other dependencies into your HTML document to getting started with this file upload plugin.

<!-- jQuery -->
<script src="https://code.jquery.com/jquery-3.4.1.min.js"></script>
<!-- Bootstrap CSS -->
<link rel='stylesheet' href='https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.1.3/css/bootstrap.min.css'>
<!-- Bootstrap JS -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.3.1/js/bootstrap.min.js"></script>
<!-- blueimp Gallery script -->
<script src="https://blueimp.github.io/Gallery/js/jquery.blueimp-gallery.min.js"></script>

2. Now, also include File Upload plugin’s CSS and JavaScript files.

    <!-- CSS to style the file input field as button and adjust the Bootstrap progress bars -->
    <link rel="stylesheet" href="css/jquery.fileupload.css" />
    <link rel="stylesheet" href="css/jquery.fileupload-ui.css" />
    <script src="js/jquery.iframe-transport.js"></script>
    <!-- The basic File Upload plugin -->
    <script src="js/jquery.fileupload.js"></script>
    <!-- The File Upload processing plugin -->
    <script src="js/jquery.fileupload-process.js"></script>
    <!-- The File Upload image preview & resize plugin -->
    <script src="js/jquery.fileupload-image.js"></script>
    <!-- The File Upload audio preview plugin -->
    <script src="js/jquery.fileupload-audio.js"></script>
    <!-- The File Upload video preview plugin -->
    <script src="js/jquery.fileupload-video.js"></script>
    <!-- The File Upload validation plugin -->
    <script src="js/jquery.fileupload-validate.js"></script>
    <!-- The File Upload user interface plugin -->
    <script src="js/jquery.fileupload-ui.js"></script>
    <!-- The main application script -->
    <script src="js/demo.js"></script>

3. After loading all necessary assets, create a basic HTML structure for file upload interface like below:

        <form
        id="fileupload"
        action="https://jquery-file-upload.appspot.com/"
        method="POST"
        enctype="multipart/form-data">
        <!-- Redirect browsers with JavaScript disabled to the origin page -->
        <noscript
          ><input
            type="hidden"
            name="redirect"
            value="https://blueimp.github.io/jQuery-File-Upload/"
        /></noscript>
        <!-- The fileupload-buttonbar contains buttons to add/delete files and start/cancel the upload -->
        <div class="row fileupload-buttonbar">
          <div class="col-lg-7">
            <!-- The fileinput-button span is used to style the file input field as button -->
            <span class="btn btn-success fileinput-button">
              <i class="glyphicon glyphicon-plus"></i>
              <span>Add files...</span>
              <input type="file" name="files[]" multiple />
            </span>
            <button type="submit" class="btn btn-primary start">
              <i class="glyphicon glyphicon-upload"></i>
              <span>Start upload</span>
            </button>
            <button type="reset" class="btn btn-warning cancel">
              <i class="glyphicon glyphicon-ban-circle"></i>
              <span>Cancel upload</span>
            </button>
            <button type="button" class="btn btn-danger delete">
              <i class="glyphicon glyphicon-trash"></i>
              <span>Delete selected</span>
            </button>
            <input type="checkbox" class="toggle" />
            <!-- The global file processing state -->
            <span class="fileupload-process"></span>
          </div>
          <!-- The global progress state -->
          <div class="col-lg-5 fileupload-progress fade">
            <!-- The global progress bar -->
            <div
              class="progress progress-striped active"
              role="progressbar"
              aria-valuemin="0"
              aria-valuemax="100"
            >
              <div
                class="progress-bar progress-bar-success"
                style="width:0%;"
              ></div>
            </div>
            <!-- The extended global progress state -->
            <div class="progress-extended"> </div>
          </div>
        </div>
        <!-- The table listing the files available for upload/download -->
        <table role="presentation" class="table table-striped">
          <tbody class="files"></tbody>
        </table>
      </form>

4. Finally, active jQuery multiple file upload with progress bar application by adding the following x-tmpl script.

          <!-- The template to display files available for upload -->
    <script id="template-upload" type="text/x-tmpl">
      {% for (var i=0, file; file=o.files[i]; i++) { %}
          <tr class="template-upload fade">
              <td>
                  <span class="preview"></span>
              </td>
              <td>
                  {% if (window.innerWidth > 480 || !o.options.loadImageFileTypes.test(file.type)) { %}
                      <p class="name">{%=file.name%}</p>
                  {% } %}
                  <strong class="error text-danger"></strong>
              </td>
              <td>
                  <p class="size">Processing...</p>
                  <div class="progress progress-striped active" role="progressbar" aria-valuemin="0" aria-valuemax="100" aria-valuenow="0"><div class="progress-bar progress-bar-success" style="width:0%;"></div></div>
              </td>
              <td>
                  {% if (!o.options.autoUpload && o.options.edit && o.options.loadImageFileTypes.test(file.type)) { %}
                    <button class="btn btn-success edit" data-index="{%=i%}" disabled>
                        <i class="glyphicon glyphicon-edit"></i>
                        <span>Edit</span>
                    </button>
                  {% } %}
                  {% if (!i && !o.options.autoUpload) { %}
                      <button class="btn btn-primary start" disabled>
                          <i class="glyphicon glyphicon-upload"></i>
                          <span>Start</span>
                      </button>
                  {% } %}
                  {% if (!i) { %}
                      <button class="btn btn-warning cancel">
                          <i class="glyphicon glyphicon-ban-circle"></i>
                          <span>Cancel</span>
                      </button>
                  {% } %}
              </td>
          </tr>
      {% } %}
    </script>
    <!-- The template to display files available for download -->
    <script id="template-download" type="text/x-tmpl">
      {% for (var i=0, file; file=o.files[i]; i++) { %}
          <tr class="template-download fade">
              <td>
                  <span class="preview">
                      {% if (file.thumbnailUrl) { %}
                          <a href="{%=file.url%}" title="{%=file.name%}" download="{%=file.name%}" data-gallery><img src="{%=file.thumbnailUrl%}"></a>
                      {% } %}
                  </span>
              </td>
              <td>
                  {% if (window.innerWidth > 480 || !file.thumbnailUrl) { %}
                      <p class="name">
                          {% if (file.url) { %}
                              <a href="{%=file.url%}" title="{%=file.name%}" download="{%=file.name%}" {%=file.thumbnailUrl?'data-gallery':''%}>{%=file.name%}</a>
                          {% } else { %}
                              <span>{%=file.name%}</span>
                          {% } %}
                      </p>
                  {% } %}
                  {% if (file.error) { %}
                      <div><span class="label label-danger">Error</span> {%=file.error%}</div>
                  {% } %}
              </td>
              <td>
                  <span class="size">{%=o.formatFileSize(file.size)%}</span>
              </td>
              <td>
                  {% if (file.deleteUrl) { %}
                      <button class="btn btn-danger delete" data-type="{%=file.deleteType%}" data-url="{%=file.deleteUrl%}"{% if (file.deleteWithCredentials) { %} data-xhr-fields='{"withCredentials":true}'{% } %}>
                          <i class="glyphicon glyphicon-trash"></i>
                          <span>Delete</span>
                      </button>
                      <input type="checkbox" name="delete" value="1" class="toggle">
                  {% } else { %}
                      <button class="btn btn-warning cancel">
                          <i class="glyphicon glyphicon-ban-circle"></i>
                          <span>Cancel</span>
                      </button>
                  {% } %}
              </td>
          </tr>
      {% } %}
    </script>