OLAS/public/vendor/bower_components/jszip/documentation/examples/downloader.inc/downloader.html

<h3>Please select your files</h3>
<form action="#" id="download_form">
    <ul>
        <li>
            <label>
                <input type="checkbox" data-url="{{site.baseurl}}/test/ref/complex_files/Franz Kafka - The Metamorphosis.epub" checked />
                Franz Kafka - The Metamorphosis.epub
            </label>
        </li>
        <li>
            <label>
                <input type="checkbox" data-url="{{site.baseurl}}/documentation/css/pygments.css" checked />
                pygments.css
            </label>
        </li>
        <li>
            <label>
                <input type="checkbox" data-url="{{site.baseurl}}/dist/jszip.js" />
                jszip.js
            </label>
        </li>
        <li>
            <label>
                <input type="checkbox" data-url="{{site.baseurl}}/test/ref/all.zip" />
                all.zip
            </label>
        </li>
    </ul>

    <button type="submit" class="btn btn-primary">pack them !</button>
</form>

<div class="progress hide" id="progress_bar">
    <div class="progress-bar" role="progressbar" aria-valuenow="0" aria-valuemin="0" aria-valuemax="100" style="width: 0%;">
    </div>
</div>

<p class="hide" id="result"></p>