如果您等待SetupEditor 事件，然后您可以访问编辑器：

add_action( \'admin_print_footer_scripts\', function () {
    ?>
    <script type="text/javascript">
    jQuery(function ($) {
        if (typeof tinymce !== \'undefined\') {
            tinymce.on(\'SetupEditor\', function (editor) {
                if (editor.id === \'contentLeft\') {
                    // Could use new \'input\' event instead.
                    editor.on(\'change keyup paste\', function (event) {
                        console.log(\'content=%s\', this.getContent());
                    });
                }
            });
        }
    });
    </script>
    <?php
} );