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<script>
                        // 剩余功能： 'lineheight', 'clearhtml', 'quickformat', 'selectall', '|', 'fullscreen', 'baidumap', 'pagebreak', 'anchor'
                        KindEditor.ready(function(k) {
                            editorContent = k.create('#content', {
                                id: 'content',
                                filterMode: false,//是否开启过滤模式
                                autoHeightMode: false,
                                uploadJson: '/kindeditor/ashx/upload_json.ashx?width=500&height=200',
                                height: $(window).height() - 260,
                                fileManagerJson: '/kindeditor/ashx/file_manager_json.ashx',
                                allowFileManager: true,
                                items: [
                                    'source', '|', 'undo', 'redo', '|', 'code', 'cut', 'copy', 'paste',
                                    'plainpaste', 'wordpaste', '|',
                                    'justifyleft', 'justifycenter', 'justifyright',
                                    'justifyfull', 'insertorderedlist', 'insertunorderedlist', 'indent', 'outdent', 'subscript',
                                    'superscript', 'removeformat', '/',
                                    'formatblock', 'fontname', 'fontsize', 'forecolor', 'hilitecolor', 'bold',
                                    'italic', 'underline', 'strikethrough',
                                    '|', 'image', 'multiimage',
                                    'flash', 'media', 'insertfile', 'table', 'hr', 'emoticons', 'link', 'unlink'
                                ],
                                afterCreate: function(id) {
                                    editorContent.event.ctrl(document, 13, function() {
                                        SaveData();
                                    });
                                    editorContent.event.ctrl(editorContent.g[id].iframeDoc, 13, function() {
                                        SaveData();
                                    });
                                }
                            });
                        })                            
                    </script>

                    <textarea name="content" id="content" style="width: 100%;"></textarea>

报：TypeError: editorContent is undefined这个错误。该如何修改啊

http://www.kindsoft.net/ke4/php/demo.php 看这里的源代码。