index.html

<!DOCTYPE html>
<html>
<head>
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" />
    <meta charset="UTF-8" />
    <title>rmodal.js</title>

    <link rel="stylesheet" href="https://unpkg.com/bootstrap/dist/css/bootstrap.min.css" />
    <link rel="stylesheet" href="https://unpkg.com/animate.css/animate.css" type="text/css" />
    <link rel="stylesheet" href="dist/rmodal-no-bootstrap.css" type="text/css" />

    <script type="text/javascript" src="dist/rmodal.js"></script>
    <script type="text/javascript">
        window.onload = function() {
            var modal = new RModal(document.getElementById('modal'), {
                beforeOpen: function(next) {
                    console.log('beforeOpen');
                    next();
                },
                afterOpen: function() {
                    console.log('opened');
                },
                beforeClose: function(next) {
                    console.log('beforeClose');
                    next();
                },
                afterClose: function() {
                    console.log('closed');
                },
                dialogOpenClass: 'animate__slideInDown',
                dialogCloseClass: 'animate__slideOutUp'
                // bodyClass: 'modal-open',
                // dialogClass: 'modal-dialog-lg',

                // content: 'Abracadabra',

                // focus: true,
                // focusElements: ['input.form-control', 'textarea', 'button.btn-primary'],

                // escapeClose: true,
            });

            document.addEventListener('keydown', function(ev) {
                modal.keydown(ev);
            }, false);

            document.getElementById('showModal').addEventListener("click", function(ev) {
                ev.preventDefault();
                modal.open();
            }, false);

            window.modal = modal;
        }
    </script>
</head>
<body>
    <div id="modal" class="modal">
        <div class="modal-dialog animate__animated">
            <div class="modal-content">
                <form class="form-horizontal" method="get">
                    <div class="modal-header">
                        <strong>Yep, I'm a dialog...</strong>
                    </div>

                    <div class="modal-body">
                        <div class="form-group">
                            <label for="dummyText" class="control-label col-xs-4">Dummy text</label>
                            <div class="input-group col-xs-7">
                                <input type="text" name="dummyText" id="dummyText" class="form-control" />
                            </div>
                        </div>
                    </div>

                    <div class="modal-footer">
                        <button class="btn btn-default" type="button" onclick="modal.close();">Cancel</button>
                        <button class="btn btn-primary" type="submit" onclick="modal.close();">Save</button>
                    </div>
                </form>
            </div>
        </div>
    </div>

    <div class="container-fluid">
        <div class="row">
            <div class="col-lg-12">
                <h3>rmodal.js</h3>
                <ul>
                    <li>A simple modal dialog</li>
                    <li>Plain JavaScript only - no dependencies</li>
                    <li>All browsers supported (IE9+)</li>
                    <li>Less than 1.2 KB when gzipped and minified</li>
                    <li>Bootstrap and Animate.css friendly</li>
                    <li>Fully unit tested</li>
                    <li>Supports CommonJS, AMD or globals</li>
                </ul>
            </div>
        </div>
        <div class="row">
            <div class="col-lg-12">
                <a href="#" id="showModal" class="btn btn-success">Show modal</a>
            </div>
        </div>
    </div>
</body>
</html>