react-state的问题
1、setState是异步的,在调用了setState之后,this.state的值并没有立即改变,可能还是使用原来的值。
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>测试state</title>
<script type="text/javascript" src="bower_components/react/react.js"></script>
<script type="text/javascript" src="bower_components/react/JSXTransformer.js"></script>
</head>
<body>
<div id="app"></div>
<!-- 遗留问题!!! -->
<script type="text/jsx">
var MessageBox = React.createClass({
handleClick:function(){
this.setState({
clickCount: this.state.clickCount + ,
clickContent: '你一共点击了'+this.state.clickCount+'次'
});
},
getInitialState: function(){
return {
clickCount: ,
clickContent: '你还没有点击哦'
}
},
render: function(){
return (
<div>
<h3>点击下面按钮:</h3>
<button onClick={this.handleClick}>点击我</button>
<div>{this.state.clickContent}</div>
</div>
);
}
});
React.render(
<MessageBox />,
document.getElementById('app')
);
</script>
</body>
</html>