function chkdiv(divid){ var chkid=document.getElementById(divid); if(chkid != null){return true; } else {return false; } } if (chkdiv('fy')){ document.getElementById('fy').innerHTML='上一篇:2020版《名师导学》高考语文总复习课件+讲义+练习 下一篇:2020新培优高考地理人教版一轮复习课件+练习 '; }