dow.matchMedia('(max-width: 768px)'); // 获取屏幕宽度
    //初始化editormd
    if(screen_width.matches){
        var editormd_watch = false;
        var editormd_height = window.innerHeight / 2 + 'px';
        var editormd_toobar = [
                    "h2","h3", "bold", "del", "italic", "quote","kaiSpan",
                    "list-ul", "list-ol", "hr", "link",
                    "mindmap","echart","imgUpload", "attachment" ,"multimedia","code", "code-block", "htmltable",
                    "emo