document.writeln("<li style=\"padding:8px 8px;\">");
document.writeln("陈同学：");
document.writeln("<span style=\"color:#999;\">");
document.writeln("2017-08-10 18:52:53");
document.writeln("</span><br>");
document.writeln("感谢您的惠顾，期待下次到来");
document.writeln("</li>");