让我们继续上一次遗留的问题：setTimeout(function(){console.log('1')});newPromise(function(resolve){console.log('2');resolve();}).then(function(){console.log('3')});conso

1\.Log信息级别Log.vVERBOSE :黑色Log.dDEBUG :蓝色Log.iINFO :绿色Log.wWARN :橙色Log.eERROR :红色从上而下级别逐次增加2\.过滤:指定标签,指定级别adblogcat\TAG:LEVEL\

publicvoidcreateDepartment(Departmentdepartment)throwsBusException{if(log.isDebugEnabled()){log.debug("EnterDepartment:{}",department);}

查看日志存放目录\find/nameaccess.log/var/log/nginx/access.logcd/var/log/nginxIP相关统计统计IP访问量（独立ip访问数量）awk'{print$1}'access.log|sortn|uniq|wcl

log4j.rootLoggerINFO,A1log4j.logger.mqLoggerINFO,A2log4j.additivity.mqLoggerfalselog4j.appender.A1org.apache.log4j.RollingFileAppenderlog4

\想确认sql\_thread线程是否应用完了io\_thread接收到的了relaylog，看Master\_Log\_FileRelay\_Master\_Log\_File，Read\_Master\_Log\_PosExec\_Master\_Log\_PosMaster_Log_File:mysqlbin.0000

http://basho.com/wpcontent/uploads/2015/05/bitcaskintro.pdf(https://www.oschina.net/action/GoToLink?urlhttp%3A%2F%2Fbasho.com%2Fwpcontent%2Fuploads%2F2015%2F05%2Fbitcaskintr

Tomcat日志在/usr/local/tomcat/logs/目录下，大概有这么几类文件：catalina.out、catalina.xxxxxxxx.log、hostmanager.xxxxxxxx.log、manager.xxxxxxxx.log、localhost.xxxxxxxx.log、xxx\_access\_log.xxxx

1\.转字符串constinput123;console.log(input'');//'123'console.log(String(input));//'123'console.log(input.toString());//'123'

如何高效查看Docker日志开发基于Docker的应用时，用好log可以大大提高排错效率，下面就是几个常用的log操作技巧：显示所有log显示实时log使用tail查看log尾部使用grep过滤log根据时间查看log组合使用把日志写入文件1.显示所有logjavascript显示某个容器的所有log$