1、问题背景
利用React实现一个计时器的效果，改变时间为1s
2、实现源码
<!DOCTYPE html> <html> <head> <Meta charset="utf-8" /> <title>React之简单入门实例（计时器）</title> <link rel="stylesheet" href="css/base.css" /> <script type="text/javascript" src="js/react.js" ></script> <script type="text/javascript" src="js/react-dom.js" ></script> <script> var ea = React.createClass({ render: function() { var elapsed = Math.round(this.props.elapsed / 100); var seconds = elapsed / 10 + (elapsed % 10 ? '' : '.0' ); var message = '开始计时：' + seconds + ' 秒'; return React.DOM.p(null,message); } }); var eaf = React.createFactory(ea); var startTime = new Date().getTime(); setInterval(function() { ReactDOM.render( eaf({elapsed: new Date().getTime() - startTime}),document.getElementById('timer') ); },1000); </script> </head> <body> <div id="timer"></div> </body> </html>
3、实现结果
原文链接：https://www.f2er.com/react/305913.html
