jodit/src/modules/helpers/checker/isHTML.ts

Jodit is awesome and usefully wysiwyg editor with filebrowser

/*!
 * Jodit Editor (https://xdsoft.net/jodit/)
 * Licensed under GNU General Public License version 2 or later or a commercial license or MIT;
 * For GPL see LICENSE-GPL.txt in the project root for license information.
 * For MIT see LICENSE-MIT.txt in the project root for license information.
 * For commercial licenses see https://xdsoft.net/jodit/commercial/
 * Copyright (c) 2013-2019 Valeriy Chupurnov. All rights reserved. https://xdsoft.net
 */

/**
 * Check if a string is html or not
 *
 * @method isHTML
 * @param {string} str
 * @return {boolean}
 */
export const isHTML = (str: string): boolean =>
    /<([A-Za-z][A-Za-z0-9]*)\b[^>]*>(.*?)<\/\1>/m.test(str);