<html>
<head>
<meta name="description" content="react - state">
<script src="//fb.me/react-0.13.1.js"></script>
<meta charset="utf-8">
<title>JS Bin</title>
</head>
<body>
<ul>
<li>L'état d'un composant, son state, est interne au composant, vous pouvez considérer son état comme étant une données privée, contrairement au propriétés </li>
<li>l'état est accessible via <b>this.state</b></li> <li>Le composant se met à jour automatiquement à chaque modification de son état</li>
<li>On déclenche une modification d'état à l'aide de la méthode <b>this.setState()</b></li>
</ul>
A VOUS !
<ul>
<li>Créez un composant "Name" qui initialise sont état avec une propriété name grace a <b>getInitialState</b></li>
<li>Utilisez votre composant dans App</li>
<li>Dans 'Name' ajouter un button qui accept un attribut 'onClick' ajouter un handle</li>
<li>dans ce handler utiliser this.setState() pour modifier l'état name</li>
</ul>
<div id="spacer"></div>
<div>v1</div>
<div id="container"></div>
</body>
</html>
#spacer{
margin: 100px 0 20px 0;
width: 300px;
height: 5px;
background-color: #DDD;
}
//v1
var App = React.createClass({
render: function(){
return (
<Name />
);
}
});
var Name = React.createClass({
getInitialState: function() {
return {
name: "Hello World"
}
},
render: function() {
return (
<div>
<button onClick={this.handleClick}>OK</button>
<p>{this.state.name}</p>
</div>
)
},
handleClick: function() {
this.setState({
name: "Hello clicRDV"
});
}
});
React.render(<App />, document.getElementById('container'));
Output
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