需要添加一句代码 afterBlur: function(){this.sync();}当失去焦点时，这个函数就是同步KindEditor的值到textarea文本框

function create_kindeditor(textarea){
        var editor = KindEditor.create(textarea, {
                            allowFileManager : true,
                            searchManagerJson : textarea.attr('plusSearchUrl'),
                            uploadJson : textarea.attr('plusUploadUrl'),
                            fileManagerJson : textarea.attr('plusFileManagerUrl'),
                            filterMode : false,
                            wellFormatMode : true,
                            afterBlur: function(){this.sync();},
                            items:[
        'source', '|', 'undo', 'redo', '|', 'preview', 'template','|', 'justifyleft', 'justifycenter', 'justifyright',
        'insertorderedlist', 'insertunorderedlist','clearhtml', 'quickformat', '|', 'table', 'hr', 'emoticons',
         'strikethrough', 'lineheight', 'removeformat', '|','anchor', 'link', 'unlink','pagebreak','|',
        '/', 
        'formatblock','fontname', 'fontsize', '|', 'forecolor', 'hilitecolor', 'bold','italic', 'underline','image','keyword'
]
                        });
    }