####react最基础的语法和不依赖环境的纯前端免编译代码
参照：http://www.ruanyifeng.com/blog/2015/03/react.html
注意事项：1.必须放倒服务器上，在文件系统上无法运行
login.html
<!doctype html> <head>
<meta charset="utf-8"> <!--reset.css-->
<link rel="stylesheet" href="/frontend/css/reset.css" /> <!--jquery-->
<script src="http://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"></script> <!--react【核心库】【dom操作库】【jsx语法库】-->
<script src="https://cdn.bootcss.com/react/15.4.2/react.min.js"></script>
<script src="https://cdn.bootcss.com/react/15.4.2/react-dom.min.js"></script>
<script src="https://cdn.bootcss.com/babel-standalone/6.22.1/babel.min.js"></script> <!--bootStrap-->
<link rel="stylesheet" href="http://cdn.bootcss.com/bootstrap/3.3.2/css/bootstrap.min.css" >
<link rel="stylesheet" href="http://cdn.bootcss.com/bootstrap/3.3.2/css/bootstrap-theme.min.css" >
<script src="http://cdn.bootcss.com/bootstrap/3.3.2/js/bootstrap.min.js"></script> <!--jquery.cookie-->
<script src="http://apps.bdimg.com/libs/jquery.cookie/1.4.1/jquery.cookie.js"></script> <link rel="stylesheet" href="login.css" type="text/css" />
<title>
页面
</title>
</head>
<body style="margin: auto">
<div id="root"></div> <script type="text/babel" src="login.js"></script> </body>
</html>
login.css
.login{
background-color: red;
}
.header{
height: 30px;
background-color: gray;
}
.userRole{
height:80px;
background-color: lightcyan;
}
.userId{
}
.userPassword{
}
.submitButtonEnabled{
color:blue;
}
.submitButtonDisabled{
color: gray;
}
login.js
class Login extends React.Component{
//props的类型和是否必须填写
// static propTypes = {
// };
constructor(props) {
super(props);
this.state = {
userId: '',
userPassword: '',
submitEnabled: false,
};
}
componentWillMount() {
console.log("componentWillMount");
}
componentDidMount() {
console.log("componentDidMount");
}
componentWillUnmount() {
console.log("componentWillUnmount");
}
//event
handleClickSubmit() {
if(this.state.userId.length < 1 || this.state.userPassword.length < 1){
return;
}
$.get("http://publicschool.sinaapp.com/test/test.php?name=jack", function(result) {
console.log(result);
});
}
handleChangeId () {
this.setState({
userId:this.refs._ref_userId.value,
submitEnabled:this.refs._ref_userId.value.length > 0 && this.refs._ref_userPassword.value.length > 0,
});
}
handleChangePassword () {
this.setState({
userPassword:this.refs._ref_userPassword.value,
submitEnabled:this.refs._ref_userId.value.length > 0 && this.refs._ref_userPassword.value.length > 0,
});
}
//渲染方法
render () {
return(
<div className="login">
<div className="header">
{this.props.title}
</div>
<div className="userRole">
{this.props.role}
</div>
<input className="userId" type="text" ref="_ref_userId" placeholder="用户名" onChange={()=>this.handleChangeId()} />
<input className="userPassword" type="password" ref="_ref_userPassword" placeholder="密码" onChange={()=>this.handleChangePassword()} />
<button type="button" onClick={()=>this.handleClickSubmit()}
className={this.state.submitEnabled?"submitButtonEnabled":"submitButtonDisabled"}>登录</button>
</div>);
}
}
ReactDOM.render(
<Login title="title" role="ddd"/>,
document.getElementById('root')
);