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:[优秀范例]似水年华 下一篇:[优秀范例]命题作文:适当进退 '; }