常用DOS命令回退一级目录：cd..回退到顶级目录：cd\\清屏：cls退出：exitjava在DOS中编译和运行带包编译：文件根目录javac文件名.java例子：

code038.jsp邮箱地址验证<%Stringmailaddressrequest.getParameter("mailaddress");code039emailnewcode039(mailaddress);//cls001类if(email.checkEmail())out.println(mailaddress

教程出自cls分享站(https://www.oschina.net/action/GoToLink?urlhttp%3A%2F%2Fwww.chenlinsheng.com%2F)1.CitrusEngine系列教程一：认识CitrusEngine(https://www.oschina.net/action/GoToLink?url

视图视图本质就是对查询的封装创建视图（定义视图 起名以v\_开头）createviewv\_studentsasselectclasses.nameas c\_name,students.\fromstudentsinnerjoinclassesonstudents.cls\_idclasses.id;查

作者：cls分享站(https://www.oschina.net/action/GoToLink?urlhttp%3A%2F%2Fwww.chenlinsheng.com)最近比较忙活，工作和家里都有些烦心的事情要处理，教程已经许久没更新了，感觉有点过不去啊。恰好今天有人问我如何修改hero默认按键和添加动画的问题，于是决定写一篇教程介绍一下~

OptionExplicitPrivateDeclareFunctionInternetOpenLib"wininet.dll"Alias"InternetOpenA"_(ByValsAgentAsString,ByValLAccessTypeAsLong,ByValsProxyNam

作者：cls分享站(https://www.oschina.net/action/GoToLink?urlhttp%3A%2F%2Fwww.chenlinsheng.com%2F)目前已有教程：1. CitrusEngine系列教程一：认识CitrusEngine(https://www.oschina.net/action/GoToL

教程出自cls分享站(https://www.oschina.net/action/GoToLink?urlhttp%3A%2F%2Fwww.chenlinsheng.com%2F)1.CitrusEngine系列教程一：认识CitrusEngine(https://www.oschina.net/action/GoToLink?url

一、wtforms源码流程1、实例化流程分析源码流程1.执行type的__call__方法，读取字段到静态字段cls._unbound_fields中；meta类读取到cls._wtforms_meta中2.执行构造方法a.循环cls.

作者：cls分享站(https://www.oschina.net/action/GoToLink?urlhttp%3A%2F%2Fwww.chenlinsheng.com%2F)目前已有教程：1.CitrusEngine系列教程一：认识CitrusEngine(https://www.oschina.net/action/GoToLi

作者：cls分享站(https://www.oschina.net/action/GoToLink?urlhttp%3A%2F%2Fwww.chenlinsheng.com%2F)1.CitrusEngine系列教程一：认识CitrusEngine(https://www.oschina.net/action/GoToLink?urlht

教程作者：cls分享站(https://www.oschina.net/action/GoToLink?urlhttp%3A%2F%2Fwww.chenlinsheng.com%2F)1.CitrusEngine系列教程一：认识CitrusEngine(https://www.oschina.net/action/GoToLink?url

简介CLS衡量的是页面的整个生命周期内发生的每次意外布局偏移的最大突发性布局偏移分数。布局变化的发生是因为浏览器倾向于异步加载页面元素。更重要的是，您的页面上可能存在一些初始尺寸未知的媒体元素。这种组合意味着浏览器在加载完成之前无法确定单个元素将占用多少空