document.writeln("<li style=\"padding:8px 8px;\">");
document.writeln("1989.321：");
document.writeln("<span style=\"color:#999;\">");
document.writeln("2017-05-15 09:12:19");
document.writeln("</span><br>");
document.writeln("好的，谢谢你的建议，我会听取的");
document.writeln("</li>");