20191205笔记
一个div实现太极
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>太极</title>
<style>
*{
margin: 0;
padding: 0;
}
body{
background-color: yellowgreen;
}
div{
width: 200px;
height: 400px;
background-color: #ffffff;
border-left: 200px solid #000000;
margin: 50px auto;
border-radius: 50%;
transition: all 1s ease-in-out;
}
div::after,div::before{
content: "";
display: block;
width: 50px;
height: 50px;
border-radius: 50%;
margin-left: -100px;
}
div::before{
background-color: #ffffff;
border: 75px solid #000000;
}
div::after{
background-color: #000;
border: 75px solid #fff;
}
div:hover{
transform: rotate(360deg);
}
</style>
</head>
<body>
<div></div>
</body>
</html> live server插件实现html代码的热更新
垂直水平居中的实现
水平垂直居中：
position:relative; left:50%; top:50%; transfrom:translate(-50%,-50%)
nodejs源码阅读
- 纯javascript写的核心模块（lib）
- 带Native Binding和javascript核心模块(lib)
- c++代码(src)
JavaWeb和NET常用框架
SSH(struts+spring+hibernate)
MV4
多层架构
前后端分离与用户验证
cookies和session,或者token
