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5component_propState.html
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5component_propState.html
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<!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>hello react</title>
</head>
<body>
<div id="app">
<!-- view 랜더링 -->
</div>
<script src="react/build/react.js"></script>
<script src="react/build/react-dom.js"></script>
<script>
//app code
var TextAreaCounter = React.createClass({
propTypes:{
defaultValue: React.PropTypes.string,
},
getDefaultProps: function(){
return{
defaultValue: '',
}
},
getInitialState: function(){
return{
text: this.props.defaultValue,
};
},
_textChange: function(ev){
this.setState({
text: ev.target.value,
});
},
render: function(){
return React.DOM.div(null,
React.DOM.textarea({
value: this.state.text,
onChange: this._textChange,
}),
React.DOM.h3(null, this.state.text.length)
);
}
});
ReactDOM.render(
React.createElement(TextAreaCounter, {
//text: "bob"
}),
document.getElementById("app")
);
</script>
<scrip>
</body>
</html>