tildes/tildes/static/js/behaviors/markdown-edit-tab.js

// Copyright (c) 2018 Tildes contributors <code@tildes.net>
// SPDX-License-Identifier: AGPL-3.0-or-later

$.onmount("[data-js-markdown-edit-tab]", function() {
    $(this).click(function() {
        var $editTextarea = $(this)
            .closest("form")
            .find('[name="markdown"]');
        var $previewDiv = $(this)
            .closest("form")
            .find(".form-markdown-preview");

        $editTextarea.removeClass("d-none");
        $previewDiv.addClass("d-none");
        $previewDiv.empty();
    });
});