tinymce插件是否可以做到这一点？我认为访问iframe的其他方法不起作用或不推荐使用。

我有found this 在打印mce插件中尝试了这一点inside the TinyMCE Advanced plugin but it does not work.

var $ = tinymce.dom.DomQuery;
$(\'p\').attr(\'attr\', \'value\').addClass(\'class\');

我已经安装了tinymce高级插件，并尝试将这些行添加到打印插件中。插件被执行，打印对话框打开，但它对dom没有任何影响。WP是否有tinymce的完整版本？

/**
 * plugin.js
 *
 * Released under LGPL License.
 * Copyright (c) 1999-2015 Ephox Corp. All rights reserved
 *
 * License: http://www.tinymce.com/license
 * Contributing: http://www.tinymce.com/contributing
 */

/*global tinymce:true */


var mce_dom = tinymce.dom.DomQuery;
mce_dom(\'p\').attr(\'id\', \'arve\').addClass(\'arve-html-class\');
mce_dom(\'html\').attr(\'id\', \'arve\').addClass(\'arve-html-class\');

tinymce.PluginManager.add(\'print\', function(editor) {

    var mce_dom = tinymce.dom.DomQuery;
    mce_dom(\'p\').attr(\'id\', \'arve\').addClass(\'arve-html-class\');
    mce_dom(\'html\').attr(\'id\', \'arve\').addClass(\'arve-html-class\');

    editor.addCommand(\'mcePrint\', function() {
        editor.getWin().print();
    });

    editor.addButton(\'print\', {
        title: \'Print\',
        cmd: \'mcePrint\'
    });

    editor.addShortcut(\'Meta+P\', \'\', \'mcePrint\');

    editor.addMenuItem(\'print\', {
        text: \'Print\',
        cmd: \'mcePrint\',
        icon: \'print\',
        shortcut: \'Meta+P\',
        context: \'file\'
    });
});

// Sets class attribute on all paragraphs in the active editor
tinymce.activeEditor.dom.setAttrib(tinymce.activeEditor.dom.select(\'p\'), \'class\', \'myclass\');

// Sets class attribute on a specific element in the current page
tinymce.dom.setAttrib(\'mydiv\', \'class\', \'myclass\');