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react在jsx语法中实现for循环

2017-11-13 11:55 288 查看
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<script src="react.js"></script>
<script src="react-dom.js"></script>
<script src="babel.min.js"></script>
<style>
.yew{color:red;}
.no{color:#000;}
</style>
</head>
<body>
<div id="root"></div>
<script type="text/babel">
class Hello extends React.Component {
render(){
var list = (length) => {
var res = [];
for(var i = 0; i < length; i++) {
res.push(<h2 key={i}>hello react</h2>)
}
return res
}
return (
<div>hello {list(this.props.length)}
</div>
)
}
}
var helloData = 5
ReactDOM.render(
<Hello length = {helloData}/>,
document.getElementById('root')
);

</script>
</body>
</html>
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