documentation/module-paypal_2view_2frontend_2templates_2payflowlink_2redirect_8phtml_source.html

<?php
?>
<html>
<head>
</head>
<body>
<script>
    (function() {
        'use strict';

        function redirect(cartUrl, errorMessage, goToSuccessPage, successUrl) {
            if (!!errorMessage.message) {
                alert(errorMessage.message);
                window.location = cartUrl;
            } else if (!!goToSuccessPage) {
                window.location = successUrl;
            } else {
                window.location = cartUrl;
            }
        }

        var cartUrl = '<?= $block->escapeUrl($block->getUrl('checkout/cart')) ?>',
            successUrl = '<?= $block->escapeUrl($block->getUrl('checkout/onepage/success')) ?>',
            goToSuccessPage = '<?= $block->escapeUrl($block->getGotoSuccessPage()) ?>',
            require = window.top.require,
            windowContext = window,
            errorMessage = {
                message: '<?= $block->escapeHtml($block->getErrorMsg()) ?>'
            };

        if(typeof(require) == "undefined") {
            redirect(cartUrl, errorMessage, goToSuccessPage, successUrl);
        } else {
            require([
                'underscore',
                'Magento_Paypal/js/model/iframe-redirect'
            ], function(_, iframeRedirect) {
                _.bind(iframeRedirect, windowContext)(cartUrl, errorMessage, goToSuccessPage, successUrl);
            })
        }


    })();
</script>
</body>
</html>